DM66 Offline Map GPS Smart Watch — 2.13" AMOLED, 37H Battery, 170+ Sports Modes

Explore Without Limits — Even Off the Grid
The DM66 is built for adventurers who go where cellular networks don't. Its standout offline map feature lets you download maps within a 2 to 20 kilometer radius directly to the watch, so route navigation, trail tracking, and location awareness keep working perfectly — no phone, no signal, no problem.
Powered by Actions AST3085S
At its core runs the high-performance Actions AST3085S chip, delivering smooth system response, reliable sensor fusion, and power-efficient operation that makes the 37-hour GPS endurance possible.
6-System Satellite Positioning
Whether you're trail running in the mountains or hiking through dense forest, the DM66 locks onto six satellite systems simultaneously for fast, accurate, and stable positioning — so your route, distance, and pace data stay precise.
2.13" AMOLED — See Everything Clearly
A large 2.13-inch AMOLED screen brings your maps, stats, and notifications to life with rich color, high contrast, and excellent sunlight legibility. The square form factor is rare among offline-map GPS watches and offers more map area per glance.
850mAh — Power That Goes the Distance
A massive 850mAh battery gives you up to 37 hours of continuous GPS tracking — enough for multi-day hikes, ultra-marathons, and backcountry adventures without reaching for a charger.
Cywee Algorithm — Pro-Level Sports Insights
The advanced Cywee sports algorithm powers 170+ sport modes, 24-hour continuous heart-rate monitoring, and automatic recognition of 5 sport types — it knows when you start running, cycling, or walking, and begins tracking without a single tap.
Full Health Suite on Your Wrist
Multi-sensor integration delivers real-time heart rate, blood oxygen (SpO₂), and stress level monitoring, helping you train smarter and recover better.
Built for the Wild
Altitude barometer + digital compass — know your elevation, weather changes, and direction at all times
5ATM water resistance — safe for swimming and all-weather use
Rugged dual-material casing — soft-gel + hard-plastic combo face shell is highly wear-resistant and scratch-proof
One-key return-to-start — instantly retrace your path back to the starting point
Ultra-Light 61g Comfort
Weighing in at just 61g (bare unit), the DM66 is one of the lightest full-featured GPS outdoor watches available. You'll forget you're wearing it — even on 37-hour adventures.