【Unique Side Scroll Wheel Encoder】Exclusive side scroll wheel encoder enables 360° rotation control for secondary/tertiary menus, volume adjustment, music switching, flashlight intensity, screen brightness, and menu navigation. 【1.7 Inch HD Display】Features a 1.7-inch high-definition screen with 360×360 pixel resolution and full-screen touch functionality for crystal-clear viewing experience. 【Built-in High-Power Flashlight】Integrated LED flashlight with strong light mode, flash mode, and SOS emergency mode, providing up to 9 hours of illumination for outdoor activities. 【Bluetooth-compatible Calling】Built-in speaker and microphone support hands-free calling and voice assistant functionality for seamless communication. 【Ultra-Long Battery Life】1100mAh polymer lithium battery provides 25-35 days of usage time and up to 200 days standby time with magnetic charging. Specifications: Model: KT92 Chip: Jerry 7074 A7 Memory: ROM 128Mb Screen Size: 1.7 inch Screen Resolution: 360×360 Pixels Material: Zinc alloy vacuum plating front case + plastic back case + metal buttons, Silicone strap Bluetooth-compatible Version: 5.4 Battery Capacity: 1100mAh Polymer Lithium Ion Standby Time: Approximately 200 days Working Time: 25-35 days usage Charging Time: Approximately 4 hours G-Sensor: STMicroelectronics LIS2DOCTR Heart Rate Sensor: HX3918 Vibration: Built-in Charging Method: Magnetic charging Speaker: Built-in Mic: Built-in Waterproof Level: IPX8-3ATM (30m depth waterproof) App Name: Da Fit Compatible System: Android 6.0+ and iOS 10.0+ Product Size: Φ51×13.4mm (watch head), 280mm total strap length Encoder: BMQ31 Touch Type: Full screen touch Display Type: TFT Algorithm: Go more algorithm Wristband Size: Total length 280mm, adjustable 155-235mm Watch Support Languages: English, Simplified Chinese, Japanese, Korean, German, French, Spanish, Arabic, Russian, Traditional Chinese, Ukrainian, Italian, Portuguese, Dutch, Polish, Swedish, Finnish, Danish, Norwegian, Hungarian, Czech, Bulgarian, Romanian, Slovak, Latvian, Indonesian, Thai, Turkish, Vietnamese, Hindi, Pashto, Lithuanian, Estonian, Slovenian, Croatian, Greek, Filipino, Hebrew, Malay, Serbian, Persian App Support Languages: English, Simplified Chinese, Japanese, German, French, Spanish, Russian, Traditional Chinese, Italian, Portuguese, Dutch, Indonesian, Thai Package included 1 x Watch 1 x English User Manual 1 x Cable Specifications Brand N/A Certificate CE-RED,CE-RoHS,FCC-ID Color Black Packaging Type Colored Box Plug Type (For Supply) N/A User Manual (Language) English Gross Weight 0.258kg Volume Weight 0.089kg Package Length 16.500cm Package Width 9.600cm Package Height 2.500cm