“Panda” describes a dial style, not a Seiko collection. Speedtimer is Seiko’s chronograph series and historical name. The two terms overlap, so a panda-dial Seiko chronograph can also be a Speedtimer. The useful comparison is therefore between specific reference numbers, not between two labels.
What each term means
In Seiko’s own description, “Panda” refers to the contrast on the SRQ029: two black sub-dials set against a white dial. Seiko’s chronograph historical collection says the watch is based on a design that fans came to call the “Panda”. The name is attached to the look of the dial, not to a product line with its own specifications.
“Speedtimer” is the broader name. It is Seiko’s chronograph series and carries the historical roots of the line. Current Prospex examples include both solar and mechanical watches, so a Speedtimer can be solar, mechanical, panda-styled or not, depending on the reference.
The overlap is real. Seiko describes both the historical SRQ029 and the modern mechanical SRQ047 as panda-style. Anyone comparing the two terms should therefore check the reference number on the caseback or in the product listing before assuming what the watch is.
#1 Best Overall
- Tachymeter Feature: Measure Speed
- Secure Case Back: Screw Type
Which references the terms point to
| Reference | Where it sits | Movement | Dial and design notes |
|---|---|---|---|
| SRQ029 | Historical chronograph, featured in Seiko’s chronograph historical collection | Caliber 8R48 (per Seiko’s historical collection page) | Two black sub-dials on a white dial, the design Seiko calls “Panda”; 1,000-piece limited edition with December 2019 availability |
| SRQ047 | Mechanical Speedtimer in Seiko’s mechanical family | Not stated in the Seiko material reviewed | Highly legible panda-style dial; Seiko says its cues derive from a 1972 Speedtimer design |
| SRQ035 and SRQ037 | Mechanical Speedtimers in the 2021 Prospex Speedtimer launch (September 28, 2021) | Automatic Caliber 8R46 (per Seiko’s launch release) | Dial colour not stated in the launch release |
| SSC813 | Solar Speedtimer in the 2021 Prospex Speedtimer launch | Solar V192 (per Seiko’s regional product page) | Dial colour not stated in the product page reviewed |
Two points follow from the table. First, a “panda” label does not tell you the movement or case size, since the SRQ029 uses a different caliber from the 8R46 launch models. Second, the SSC813 is a solar watch, while the other entries are automatic. Treat any spec you read for one reference as specific to that reference.
Solar SSC813 versus mechanical Speedtimers
The table below compares the SSC813 with the SRQ037, the mechanical launch model for which Seiko published the most complete figures. Where a value is not stated for a specific model in the sources, the cell says so rather than borrowing a figure from another reference.
Rank #2
![SEIKO SBDL085 [PROSPEX SPEEDTIMER Solar Chronograph] Mens Watch Shipped from Japan](https://m.media-amazon.com/images/I/41qNCHkLgqL._SL160_.jpg)
- Item shape: Round
- Power source type: Solar Powered
- Clasp type: Push Button Deployment Clasp
| Axis | SSC813 (solar) | SRQ037 (mechanical, 8R46) |
|---|---|---|
| Movement | Solar V192 | Automatic Caliber 8R46, with column wheel and vertical clutch (per 2021 launch release) |
| Diameter and thickness | 39.0 mm diameter, 13.3 mm thick (Seiko product page) | 42.5 mm diameter, 15.1 mm thick (2021 launch release) |
| Lug-to-lug and lug distance | 45.5 mm lug-to-lug; 20 mm between lugs (Seiko product page) | Not stated in the launch release |
| Chronograph | Measures to 60 minutes in 1/5-second increments; 24-hour hand; date; power reserve indicator | 12-hour chronograph (per the release’s description of 8R46) |
| Power reserve | Approximately six months’ operation when fully charged (Seiko product page) | 45 hours (per the release, for the listed 8R46 models) |
| Accuracy | ±15 seconds per month (Seiko product page) | Not stated in the launch release |
| Crystal | Curved sapphire | Dual-curved sapphire |
| Water resistance | 10 bar | 10 bar |
The practical difference is the power source and the case. The SSC813 is smaller and runs on light, so its reserve is described in months rather than hours. The mechanical models are larger, wind on the 8R46 caliber’s 45-hour reserve, and give a 12-hour chronograph rather than the 60-minute solar counter. Neither set of figures can be applied to the SRQ047 or to the SRQ029, whose sizes and movements are not compared here.
The SRQ029 and the 1969 Caliber 6139
The Panda name is tied to Seiko’s chronograph history. Seiko says the 1969 Caliber 6139 was an important milestone because it combined a column wheel and a vertical clutch. Seiko states that these parts improved the precision with which elapsed time could be measured in a watch.
Recommended Free Tools
Rank #3
![SEIKO SBDL095 [PROSPEX SPEEDTIMER Solar Chronograph] Men's Watch Shipped from Japan Released in Nov 2022 white](https://m.media-amazon.com/images/I/41dWo45BQgL._SL160_.jpg)
- SEIKO Prospex
- Item shape: Round
- Power source type: Solar Powered
- Seiko Prospex
The SRQ029 is presented in Seiko’s historical collection as a modern take on that era’s design. It uses Caliber 8R48 and was a limited edition of 1,000 pieces with December 2019 availability, according to that page. Its status as a limited edition is historical; it is not an ongoing reference in the sources reviewed.
The solar and mechanical Speedtimers introduced in 2021 were positioned as heirs to the 1960s and 1970s Speedtimer designs. Seiko’s solar collection page says the solar watches inherit those designs and styles, and the mechanical family page ties the SRQ047’s panda-style dial to a 1972 Speedtimer design.
Rank #4
![SEIKO SBDL097 [PROSPEX SPEEDTIMER Solar Chronograph] Men's Watch Shipped from Japan Released in Nov 2022](https://m.media-amazon.com/images/I/51L65FBObTL._SL160_.jpg)
- Individually boxed, with warranty card included
- Solar
- Runs for approximately 6 months on a full charge
- Includes tachymeter
- Charging level display function
Prices and availability
Price figures for these references are not like-for-like, and none should be read as a current street price. Seiko’s regional product page for the SSC813 showed USD 680 for the Middle East and EUR 750 for France when it was checked in 2026. The 2021 launch release listed USD 725 for the solar models at launch. The launch release gives no single mechanical price; the mechanical launch prices varied by model.
Current availability, retailer prices and the authenticity of individual listings were not established in the sources reviewed. Check a current regional listing from Seiko or an authorised dealer before comparing prices. The SRQ029 is a limited edition from 2019, so its availability depends on the secondary market rather than on a current Seiko listing.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Best Value
- Released August 2024
- Comes with a separate box
- Average monthly difference ±15 seconds
- Solar
- Runs for approximately 6 months when fully charged
How to choose
- If you want the panda look with a historical reference: the SRQ029 is the Seiko design the name refers to. Its 1,000-piece limited edition status means it is found only on the secondary market.
- If you want a panda-style Speedtimer in a current mechanical model: check the SRQ047 specifications directly from Seiko’s mechanical family page, since its movement and size were not stated in the sources reviewed.
- If you want a modern solar Speedtimer: the SSC813 is a 39 mm solar watch with a V192 movement, a 60-minute chronograph and a power reserve indicator. It is the reference to compare if size and reduced maintenance matter more than an automatic movement.
- If you want an automatic Speedtimer with a longer chronograph spec: the SRQ035 and SRQ037 use the 8R46 caliber, with a 45-hour power reserve and a 42.5 mm case, but confirm which of the two references and dial colours you are buying.
Before buying, confirm the reference number, the dial colour and the movement against Seiko’s official page for that exact model, because the terms “panda” and “Speedtimer” do not identify a watch on their own.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
