From the manufacturer

Dual-Chip Endurance System for Up to 21-Day Use Time.

A dual-chip endurance system keeps your watch going strong for up to 36 hours to 21 days. Two endurance modes work together to maximize battery life, powered by the high-performance Qualcomm Snapdragon Wear 3100 and AmbiqMicro's energy-efficient Apollo3 Wireless SoC. Whether you're on a long trip or just need to make it to the office, your watch can support you all the way.

Follow Your Heart's Every Beat.

Your heart keeps pumping around the clock – doesn't it deserve a bit of attention? OPPO Watch never misses a beat, thanks to its rear optical heartbeat sensor. To take a closer look at how your heart's doing, just generate a heart rate report with the HeyTap Health app.

50-Meter Water Resistance

Track your runs, swims, bike rides, walks, and other activities with the five large exercise sensors on the back of your watch. GPS + GLONASS location services map your route, and 50-metre water resistance⁶ protects your watch as you swim or brave the weather.

Everything Just a Glance Away.

Wear OS by Google is loaded with convenient features and designed to help you maximize your time. Explore hundreds of apps on Google Play to get things done faster. Stream music, reply to messages, and check news headlines. Make payments on the go with Google Pay, get answers from Google Assistant, and track workouts and fitness goals with Google Fit.