Crashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallAdrian Ballinger reached Everest’s summit without supplemental oxygen on May 23, 2017, at 10:53 a.m., according to his EverestNoFilter project page. In a 2019 interview with MONOCHROME Watches, the mountain guide described the Favre-Leuba Bivouac 9000 he wore on Everest as a practical manual instrument for tracking time, altitude and changing barometric pressure—not as a substitute for expedition equipment or judgment.
How did Adrian Ballinger climb Everest without oxygen?
Ballinger’s EverestNoFilter page records his oxygen-free summit at 10:53 a.m. on May 23, 2017. The project was a two-year effort with National Geographic photographer and alpinist Cory Richards. EverestNoFilter
In a 2019 interview published by MONOCHROME Watches, Ballinger said he had been on Everest 12 years in a row and had summited six times by 2016, mostly as a guide and mostly using supplemental oxygen. The interview took place in Zurich a few weeks after he returned from climbing K2 without supplemental oxygen. These are Ballinger’s recollections in that interview, rather than a separate record of his climbing history. MONOCHROME Watches interview
What was his experience summiting Everest with the Favre-Leuba Bivouac 9000?
Ballinger said he had taken the Bivouac 9000 to Everest in the two years before the interview. He valued it for three practical reasons: it gave him a mechanical way to keep time, helped him stay aware of altitude, and showed barometric pressure that he could observe while at camp. In his account, tracking time mattered when managing periods without oxygen as well as oxygen use.
Free tools Windows power users keep installed
One-click scans. No signup required.
#1 Best Overall
- Tough Solar Power, 100M Water Resistant, Low Temperature Resistant (-10 C / 14 F), Altimeter, Digital Compass, Barometer, Thermometer. Thermometer Display range: -10 to 60 C (14 to 140 F) Display unit: 0.1 C (0.2 F)
- Full Auto LED (Super Illuminator) Backlight with Afterglow, World Time, 31 time zones (48 cities + UTC), city name display, daylight saving on/off, Sunrise/Sunset Data, 5 Daily Alarms (4 one-time and 1 snooze alarm)
- Hourly Time Signal, 1/10 Second Stopwatch, Countdown Timer, 12/24 Hour Formats, Button operation tone on/off
- Storage Battery: Solar Rechargeable Battery, Battery Level Indicator
- Power Saving Function, Approx. Battery Life: 9 months on full charge (without further exposure to light), Module 3415
- Timekeeping: The mechanical watch served as a timekeeping backup that did not depend on a battery. Ballinger said prolonged exposure to intense cold could make battery-powered equipment unreliable; that is his expedition experience, not proof that all electronic devices fail in cold.
- Altitude awareness: The interview describes the model as able to measure altitude up to 9,000 metres. Favre-Leuba’s indexed brand text describes an inbuilt altimeter that converts air-pressure changes into a visible altitude reading. This describes the instrument’s indicated altitude, not independently verified measurement accuracy. Favre-Leuba brand article
- Pressure observation: Ballinger said he used its barometric-pressure readings to help assess weather while at camp. The interview does not establish that the watch predicts weather or replaces dedicated forecasting and safety procedures.
He also changed the strap so he could wear the watch over an insulating clothing layer and avoid having metal directly against his skin. The interview does not specify a strap size or compatible replacement reference.
Ballinger summed up the reassurance of a mechanical timekeeper in the cold with the words: “I know I have time.”
Rank #2
- 【Built-in GPS & Multi-System Positioning】Stay on track with the Tiwain smartwatch’s built-in GPS. Featuring military-grade single-frequency and six-satellite support (GPS, GLONASS, Beidou, Galileo, NAVIC, QZSS), this watch offers fast and accurate location tracking wherever you go. It also includes a compass, altimeter, and barometer, giving you real-time data on your altitude, air pressure, and position.
- 【Military-Grade Durability】Engineered to withstand the toughest conditions, the Tiwain smartwatch meets military standards for extreme temperatures, low pressure, and dust resistance. Crafted from tough zinc alloy with a vacuum-plated finish, this watch is also waterproof and built to resist wear and tear. The 1.43-inch AMOLED HD touchscreen offers clear visibility in all environments, and the watch supports multiple languages for global users.
- 【170+ Sport Modes & Fitness Tracking】Track your fitness journey with 170+ sport modes, including walking, running, cycling, hiking, basketball, and more. Set exercise goals, monitor progress, and sync your data to the companion app. The smartwatch also offers smart features like music control, camera remote, weather updates, long-sitting reminders, and more.
- 【LED Flashlight for Outdoor Adventures】The Tiwain smartwatch comes equipped with a built-in LED flashlight that can illuminate up to 20 meters. Activate it with the side button for added convenience during nighttime activities or outdoor adventures.
- 【Comprehensive Health Monitoring】Monitor your health with real-time heart rate, sleep, and blood oxygen level tracking. The smartwatch will vibrate to alert you of any abnormal readings. You can also make and receive calls directly from the watch, and stay connected with message and app notifications (receive only, no sending capability) – perfect for when you’re driving or exercising.
What the interview does—and does not—establish about the watch
The account is a climber’s description of how he used a watch on an expedition, not an independent product test. It supports the model name Bivouac 9000, its reported 9,000-metre altitude range, and Ballinger’s stated uses. It does not establish current production or availability, pricing, exact strap fit, or controlled performance for accuracy, reliability or safety. The article’s historical account should not be read as a current buying recommendation.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What happened to the watch from the 2018 Everest summit?
In the 2019 interview, Ballinger said the grey Bivouac 9000 he summited Everest with in 2018 was auctioned to raise money for the Khumbu Climbing Center, which he described as training Sherpas in mountain safety skills. That was a past fundraising event; the account does not indicate an active auction, ongoing donation campaign or commercial partnership. MONOCHROME Watches interview
Quick Recap
Rank #4
- Outdoor Adventure Companion: This men's wrist watches is a classic outdoor sports digital watch equipped with an altimeter, barometer, compass, sunrise and sunset times, and other smart features. Stay informed during hiking, mountaineering, cycling, camping, and other outdoor adventures.
- Durable and Easy-to-Read Design: The EZON tactical watch combines ultra-durable materials to withstand the rigors of running, swimming, cycling, gym workouts, hiking, and other outdoor activities.
- Minimalist Sporty Design: Featuring a classic sports dial, this watch offers a timeless look. The large digital display with EL backlight ensures clear time visibility in the dark, making it easy to read in low-light conditions. It provides accurate timekeeping and long-lasting durability.
- Manual Altitude Record Storage: Save the highest measured altitude at any point during your climb. Store up to 50 altitude records directly on your watch for future reference.
- Multifunctional Stopwatch Mode: Track your performance with both single-segment and split segment timing, ensuring precise time measurement for runners and outdoor enthusiasts.
Rank #3
- Suunto Core: This classic outdoor sports watch is packed with intelligent features like a Storm Alarm, Altimeter, Barometer and compass to keep you informed of conditions while you hike, bike, or camp
- Essential for Adventure: This watch has dual times, date display, and alarm, plus predicted times for sunrise and sunset to help maximize your daylight hours and a depth meter accurate up to 30 feet
- Suunto Sports Watches: Versatile and durable, Suunto sports watches are great for running, swimming, cycling, gym workouts, hiking, and other outdoor sports; Whatever your needs, Suunto has a watch for you
- Adventure Starts Here: Combining Scandinavian design with ultra durable materials, our watches track your sports, daily activity, and sleep to help you keep life, training and recovery in balance
- Authentic Heritage: Founded in 1936, Suunto brings over 80 years of high quality heritage craftsmanship, relentless accuracy, and pioneering innovation to our watches, compasses, and dive products
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.
