Model PG666<br>Screen size: 1.39 inch TFT HD round screen<br>Screen resolution: 360*360<br>Screen type: IPS full-view color screen<br>Screen Material: Glass<br>System: IOS/Android<br>Chip Realtek: 8763EWE<br>Bluetooth: 5.1<br>Battery type: Lithium battery<br>Battery model: 602226 polymer<br>Battery voltage: 3.7V<br>Battery capacity: 340mAh<br>Charging method: Magnetic charging<br>Charging time: about 3 hours<br>Functions: 6 sets of theme styles, custom watch faces, support step counting, brightness adjustment, multi-sport mode, sleep detection, health monitoring, breathing training, information push, remote control music, remote photography, voice assistant, real-time weather, find mobile phone (connect to mobile phone to use), alarm clock, timer, stopwatch, do not disturb mode, bluetooth call, etc<br>Total length of wristband: 270mm <br>Wristband material: silicone<br>Head size: 50.4*54.3*13.2<br>Product process: aluminum alloy + ABS<br>Net weight: 45 grams Vibrant Display & Durable Build: Features a 1.39-inch round IPS full-view color screen with 360x360 HD resolution protected by glass, housed in a lightweight (45g) aluminum alloy + ABS body for a clear visual experience and robust feel. Comprehensive Health & Smart Features: Offers extensive functionality including multi-sport modes, health monitoring (steps, sleep, heart rate), breathing training, Bluetooth calling, real-time weather, notifications, remote controls (music, camera), and voice assistant support. Long-Lasting Battery with Convenient Charging: Powered by a 340mAh polymer lithium battery providing extended use, supporting convenient magnetic charging with a full recharge time of approximately 3 hours. Brand Rainbuvvy Compatible OS iOS, Android Mobile OS IOS/Android Resists water N Screen size 1.39 in Display TFT LCD Smart watch functions Call Notification, Music Control, Voice Assistant Smart watch alerts & health monitors Heart Rate Monitor, Sleep Monitor Wireless Bluetooth Case material Aluminum Band material Silicone Color Black Watch band color Black Watch case color Black Watch case shape Round Model name PG666 Watch features Alarm, Stopwatch, Timer, Music, Voice Assistant Has touchscreen Y Voice-activated Y Watch band style Smart Watch Watch band length 270 mm Watch case height 13.2 mm Has written warranty No Gender Unisex Age group Adult