【Advanced Waterproof Design】 IP68 waterproof rating ensures durability and protection during various activities and weather conditions. 【High-Resolution Display】 1.39-inch IPS screen with 360x360 resolution provides clear and vibrant visuals for easy readability. 【Comprehensive Health Monitoring】 Features heart rate monitoring, blood pressure measurement, and over 100 sports modes for comprehensive fitness tracking. 【Smart Connectivity】 Bluetooth 5.1 enables seamless connection with smartphones, supporting message notifications and remote camera control. 【Long-lasting Battery】 400mAh polymer battery capacity ensures extended usage time between charges. Specifications: Model No.: AK61 Water Proof: IP68 Waterproof Product Type / Material: Smart Bracelet/Main Metal, TPU Watchband Chipset No.: 8763EWE Internal Memory for Storage (ROM+RAM): 16MB FLASH + 160KB RAM Max External Memory Support (T Flash) (GB): 128MB LCD Style: IPS Resolution: 360*360 Screen Size: 1.39 inches Colorful LCD Touch Panel: Full Touch BT Antenna: YES G-Sensor: SC7A20H Version: BT5.1 Battery Type: Polymer Battery Capacity: 400mAh Heart Rate: VC30F+Dynamic Heart Rate Blood Pressure: YES, by Software Blood Oxygen: N/A Multi-Sport Mode: 100+ Compatibility: Support IOS 9.0+ and Android 4.4+ Notification (With Content for Facebook, Twitter, WhatsApp, WeChat, Line, KakaoTalk, Instagram Messaging, Calling): Yes Encoder: Yes Pedometer: Yes Music Player: Yes Bluetooth Call: YES Call Records: YES Contact Person: YES Phone Dialing: YES Sedentary Reminder (APP): YES Sleep Monitor: Yes Remote Camera: Yes Weather Forecast: Yes APP Language: Supports 13 Languages (Chinese, Traditional Chinese, English, Korean, Japanese, German, Russian, Spanish, Italian, French, Polish, Arabic, Portuguese) Watch Language: Chinese, English, German, Hungarian, Japanese, French, Spanish, Portuguese, Italian, Korean, Arabic, Polish SMS: YES, View Only, Cannot Reply Vibrator: Yes Speaker: Yes Buttons: YES, by Software Support OTA: YES APP Name for IOS: DAfit APP Name for Android: DAfit