1.74-inch AMOLED Display: High-definition full screen display with a natural and pure appearance. Narrower borders and wider display boundaries. View more sports information, call reminders, just raise your hand Bluetooth calling, making communication more free: The watch uses high fidelity speakers and Bluetooth hands-free calling, displaying high-definition audio. Whether driving or exercising, mobile phone calls can be pushed in a timely manner, with one click answering, freeing hands Built in 100 exercise modes: With 100 exercise modes, it provides comprehensive coverage for daily fitness. Equipped with acceleration sensors, real-time monitoring of exercise duration, mileage, and other movement conditions makes exercise fun and efficient Precise dynamic heart rate monitoring: With a hands-free monitoring sensor, the precise dynamic heart rate monitoring keeps an eye on your heart health. It can monitor your heart rate 24 hours a day, achieving real-time heart rate monitoring. This feature is based on biological tracking optical sensors to effectively assist in monitoring Other Function:? Bluetooth calling, 11 sets of menu styles, support for more than 200 watch faces, breathing training, custom watch faces, stopwatch, brightness adjustment, multi-sport mode, real sleep, real heart rate, information push, remote music, remote photography, real-time weather, find mobile phone (Connected to a mobile phone for use), Bluetooth music playback, password protection, calculator, split-screen display, shortcut widget, weather, female assistant, massager, GPS track, voice assistant, alarm clock, flashlight, power saving mode, smart and watch mode Choice, one link, explosion-proof glass, compass, multiple games, multiple screen-off clocks, independent ringtones Specifications: Model: DTV1 Compatible systems: iOS/Android system App: WearPro Chip Realtek: RTL8763E Android System: Support Android 4.4 and above IOS System: Apple IOS 10.0 or above Heart Rate Sensor: HX3918 In vivo detection Bluetooth: Dual Bluetooth 5.0 Compass: Support Waterproof level: IP68 Product technology: zinc alloy+IML Screen size: AM1.74-inch AMOLED high-definition rectangular screen Screen Resolution: 336x480 Screen type: AMOLED full-view color screen Screen material: Explosion-proof tempered glass (G+F) Total length of wrist strap: 250mm Net weight: 23g Wristband material: Silicone, Steel Battery Type: lithium battery Battery model: 392121 Polymer Battery voltage: 3.8V high voltage Battery capacity: 180mA/h Battery life: It takes 5-6 days of normal connection use and 15-25 days of standby time. (Connection usage depends on personal usage) Charging method: Wireless charging Charging time: About 2.5 hours App Support Language: Chinese, Traditional Chinese, English, Korean, German, Spanish, Japanese, French, Italian, Russian, Portuguese, Arabic, Ukrainian, Thai Device-side supported languages: English, Simplified Chinese, Traditional Chinese, Danish, Greek, Latin, Romanian, Turkish, Hebrew, Czech, Polish, Spanish, German, Russian, Portuguese, French, Japanese, Italian, Vietnamese, Korean, Arabic, Persian Languages supported by the manual: Chinese, English Certification: ID, ROHS, battery certification