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Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →The TAG Heuer Connected Calibre E4 is a discontinued Wear OS 3 smartwatch that pairs luxury-watch styling with everyday smart features, but it is a one-day device rather than a serious endurance or training watch. The 42mm is lighter and less visually dominant; the 45mm has a larger display and battery, though both are relatively thick and need regular charging.
Choose between them for fit and display size, not for multi-day battery life or dependable workout heart-rate data. TAG Heuer’s US product pages mark both sizes discontinued, so check availability and software compatibility before buying.
TAG Heuer Connected Calibre E4: key differences
TAG Heuer lists the E4 with a Snapdragon Wear 4100+, AMOLED display with sapphire crystal, GPS/GNSS, Wi-Fi, Bluetooth 5.0, NFC, heart-rate sensor, compass, microphone, barometer, rotating crown, and two pushers. Exact specifications can vary by reference; check the particular model before purchase.
| Specification | 42mm | 45mm |
|---|---|---|
| Case diameter | 42mm | 45mm |
| Thickness | 13.9mm in TAG Heuer’s general FAQ; some product references list 14.2mm | 15.1mm in TAG Heuer’s general FAQ; some references are approximately 15.27mm |
| Display | 1.28-inch AMOLED | 1.39-inch AMOLED |
| Battery capacity | 330mAh | 440mAh |
| Module weight | 66.3g steel; 50g titanium | 82.3g steel; 59.4g titanium |
| Water resistance | 50m / 5ATM | 50m / 5ATM |
| TAG Heuer battery rating | Full day, including a one-hour sports session | Full day, including several hours of sports use |
| TAG Heuer charging claim | 100% in 1.5 hours | 100% in 1.5 hours |
TAG Heuer’s thickness figures vary by reference and measurement context, so do not treat one figure as universal. The dimensions and weights above are from TAG Heuer’s product information and FAQ. (Sources: TAG Heuer dimensions FAQ; TAG Heuer product page.)
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- TAG HEUER SMARTWATCH - Includes waterproof TAG Heuer Smart Watch Connected Calibre E4 42 mm Golf Edition, white strap, and black/green interchangeable rubber straps with titanium grade 2 buckles, USB-C cable, main socket, charging dock, and 3 Tag Heuer Golf balls.
- WHERE LUXURY MEETS SPORTS & FITNESS - Tag Heuer fitness watch features include heart rate, wellness, fitness, steps, calling, SMS, emails, compass, microphone, barometer readings, and more. Pre-installed apps & features include TAG Heuer Sports (Running, Cycling, Fitness, Swimming, other sports), TAG Heuer Wellness, TAG Heuer Golf, NFT Viewer.
- MAXIMIZED FOR HIGH PERFORMANCE - Tag Heuer Watches men or women is crafted in ultra-light grade 2 titanium and integrating ergonomic black steel pushers, the sandblasted, black DLC-finished case is built to endure.
- A MUST HAVE FOR EVERY GOLFER - TAG Heuer Golf Watch has a stunning 2D high resolution display showing hazards and distances of more than 40,000 golf courses worldwide.It's the perfect caddie on the wrist; one has just to glance at the watch to know the distance for the next shot while seeing the club recommendation.
- TAG HEURER WATCH POWER & CONNECTIVITY - Running on an impressive Qualcomm Snapdragon Wear 4100+ chipset with a Sapphire Crystal AMOLED display 1.28". With smart watch features that connect with Wi-Fi, Bluetooth 5.0, NFC, NS GNSS.
Design and choosing a size
The E4’s round case, sapphire-covered screen, rotating crown, and pushers give it a more conventional watch appearance than many rectangular smartwatches. The two sizes are not interchangeable in feel: the 42mm has the smaller screen and lower weight, while the 45mm offers more display area and a larger battery. Neither is especially slim: TAG Heuer’s published thickness figures are around 14mm for the 42mm and 15mm for the 45mm.
Pick the 42mm if a lighter, less prominent watch matters most. Pick the 45mm if you prefer a larger screen and want the larger battery. Try the exact reference on your wrist if possible; case diameter alone does not capture thickness or weight, and steel and titanium versions differ.
Software, compatibility, and setup
The E4 runs Wear OS 3, according to TAG Heuer’s current documentation. It is not waiting for a Wear OS 3 update. TAG Heuer’s stated minimum phone requirements are Android 8.1 or later, excluding Android Go, and iOS 15.4 or later; compatibility with later phone software can depend on the specific phone and app support.
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Pair the watch using the E3/E4 TAG Heuer Connected app. TAG Heuer says the separate Wear OS phone app is not required for E4 pairing. A Google account is needed for app updates and access to all features. Google Wallet is listed as supported with Android, subject to country and bank eligibility, but not with iPhone. (Sources: TAG Heuer pairing FAQ; TAG Heuer software update guidance; TAG Heuer payments table.)
Battery life and charging
TAG Heuer rates both E4 sizes for a full day, not multi-day smartwatch use. Its stated test assumptions differ: the 42mm rating includes a one-hour sports session, while the 45mm rating includes several hours. The 45mm’s 440mAh battery is larger than the 42mm’s 330mAh battery, but that does not make it a multi-day watch. Actual runtime varies with brightness, always-on display, notifications, GPS, Wi-Fi, apps, charge-cycle age, and wellness monitoring. TAG Heuer claims a 1.5-hour full charge for both sizes. (Source: TAG Heuer product specifications.)
Fitness and health tracking
Preinstalled TAG Heuer apps include Sports, Golf, and Wellness. Sports covers activities such as running, cycling, fitness, swimming, and walking; Golf is handled separately. GPS distance in independent testing was broadly comparable with reference sports watches, but that does not establish equal performance in every condition.
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Do not buy the E4 on the assumption that its workout heart-rate readings are consistently reliable. Independent testing reported material inaccuracies during exercise, and TAG Heuer warns that fit, position above the wrist bone, sensor cleanliness, sweat or water, tattoos, scars, and loose bracelets can affect readings. TAG Heuer says heart-rate measurement is disabled during swimming because moving water makes readings unreliable. Its native software reviewed by Wareable did not include sleep tracking; sleep tracking requires a third-party Wear OS app. (Sources: Wareable review; TAG Heuer heart-rate guidance; TAG Heuer product page.)
Water resistance
Both sizes are rated 50m / 5ATM. TAG Heuer says the watches may be worn in the shower, while swimming, and during surface watersports, but not water skiing, diving, or snorkeling. A 50m rating should not be read as permission to dive to 50 meters. (Source: TAG Heuer water-resistance FAQ.)
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How it compares with alternatives
The E4 makes the most sense for someone who values TAG Heuer’s case design and watch styling and accepts Wear OS, daily charging, and more limited sports insight. Compare it with alternatives according to your phone and priorities, rather than assuming luxury materials make it the stronger smartwatch.
| Priority | What to consider |
|---|---|
| TAG Heuer styling and a traditional round-watch look | Connected Calibre E4, if you can find the size and reference you want |
| iPhone integration and wrist payments | The E4 can pair with iPhone, but TAG Heuer lists Google Wallet payments as Android-only |
| Training data and endurance | Compare current sports watches directly; the E4 is rated for a full day and its workout heart-rate accuracy has documented limitations |
| Current product support and availability | Check the seller and TAG Heuer’s compatibility guidance; both sizes are listed as discontinued on TAG Heuer’s US site |
The existing comparison links point to product searches, not verified specifications; use them only to browse alternatives: Apple Watch Ultra and Samsung Galaxy Watch.
Verdict
The Connected Calibre E4 is a discontinued luxury smartwatch, not a current TAG Heuer model to assume is readily available. Its strongest case is design; its main compromises are one-day battery expectations, Wear OS dependence, and fitness limitations—especially workout heart-rate reliability and the lack of native sleep tracking in the software reviewed by Wareable.
The 42mm is the lighter, smaller-screen option; the 45mm is heavier, larger, and has a bigger battery and display. Choose based on how each reference wears, and verify its condition, phone compatibility, and support before purchasing.
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Is the TAG Heuer Connected Calibre E4 discontinued?
TAG Heuer’s US product pages mark both the 42mm and 45mm versions as discontinued. Availability may depend on the retailer or second-hand market. (Source: TAG Heuer product-status FAQ.)
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- TAG HEUER SMARTWATCH - Includes waterproof TAG Heuer Smart Watch Connected Calibre E4 45 mm Golf Edition, white strap, and black/green interchangeable rubber straps with titanium grade 2 buckles, USB-C cable, main socket, charging dock, and 3 Tag Heuer Golf balls.
- WHERE LUXURY MEETS SPORTS & FITNESS - Tag Heuer fitness watch features include heart rate, wellness, fitness, steps, calling, SMS, emails, compass, microphone, barometer readings, translate, and more. Pre-installed apps & features include TAG Heuer Sports (Running, Cycling, Fitness, Swimming, other sports), TAG Heuer Wellness, TAG Heuer Golf, NFT Viewer.
- MAXIMIZED FOR HIGH PERFORMANCE - Tag Heuer Watches men or women is crafted in ultra-light grade 2 titanium and integrating ergonomic black steel pushers, the sandblasted, black DLC-finished case is built to endure.
- A MUST HAVE FOR EVERY GOLFER - TAG Heuer Golf Watch has a stunning 2D high resolution display showing hazards and distances of more than 40,000 golf courses worldwide.It's the perfect caddie on the wrist; one has just to glance at the watch to know the distance for the next shot while seeing the club recommendation
- TAG HEURER WATCH POWER & CONNECTIVITY - Running on an impressive Qualcomm Snapdragon Wear 4100+ chipset with a stunning Sapphire Crystal AMOLED display 1.39". With smart watch features that connect with Wi-Fi, Bluetooth 5.0, NFC, NS GNSS.
Does the Calibre E4 run Wear OS 3?
Yes. TAG Heuer’s current documentation identifies the E4 as running Wear OS 3; claims that it is still waiting for that update are outdated. (Source: TAG Heuer software update guidance.)
Does Google Wallet work on the E4 with an iPhone?
No. TAG Heuer lists Google Wallet support for the E4 with Android, subject to country and bank eligibility, and not with iPhone. (Source: TAG Heuer payments table.)
Does the E4 track sleep or provide reliable workout heart-rate readings?
The native TAG Heuer software reviewed by Wareable did not include sleep tracking; a third-party Wear OS app is needed. Independent testing found workout heart-rate inaccuracies, and TAG Heuer lists several conditions that can affect readings. (Sources: Wareable review; TAG Heuer heart-rate guidance.)
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TAG Heuer rates both sizes for a full day. The 42mm rating includes a one-hour sports session; the 45mm rating includes several hours. Runtime varies with settings and use, and neither rating promises multi-day smartwatch life. (Source: TAG Heuer product specifications.)
Can I swim with the Calibre E4?
TAG Heuer rates it 50m / 5ATM and permits swimming and surface watersports, but advises against diving, snorkeling, and water skiing. The rating is not a 50-meter diving depth. (Source: TAG Heuer water-resistance FAQ.)
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