描述 Make and receive calls with ease, thanks to the built-in Bluetooth call feature. Pair the watch with our app once for seamless connectivity.this smartwatch offers a sleek and lightweight design for ultimate comfort.  product description Product color Black tarnish, Army green Product Size 48*43*12.3MM Case material Plastic Alloy Strap specifications 24mm Nylon  strap (removable and replaceable) product weight 40g waterproof level IP68 Bluetooth distance ≥ 10M Endurance Standby time:20 days;                                                                                                usage time:7–15 days (depending on the usage scenario) Charging time ≈ 2H With smart phone system Android 5.1 or IOS 8.2 or above supports Bluetooth 4.4BLE system APP name Vfit Watch firmware language Simplified Chinese, Traditional Chinese, English, French, German, Japanese, Spanish, Italian, Russian, Czech, Portuguese, Turkish, Greek, Vietnamese, Thai, Arabic, Polish, Dutch, Latin Denmark Romania APP language Simplified Chinese, Traditional Chinese, English, French, German, Japanese, Spanish, Italian, Russian, Czech, Portuguese, Turkish, Greek, Vietnamese, Thai, Arabic, Polish, Dutch, Latin Denmark Romania package packing size：161*93*33mm       weight：185g       Quantity：50 Hardware configuration CPU RTL8762DK HN333 RAM 128KB ROM External 128Bit Heart rate sensor HRS3300 Accelerometer SC7A20 Bluetooth BLE5.0 Display 1.96inch IPS  display, 320*386 pixel  Vibration motor 15000±2500 rpm Physical button 2 distance measuring Touch Full screen touch battery 320mAh polymer battery Charging port Wireless charging SPK AAC 1609 Waterproof SPK MIC 0415 Waterproof MIC function Device Information Device name (DV02), MAC address, version number Dimming Support 5 gear adjustment (default second gear) Raise your wrist and bright screen Default on for 5 seconds Find phone support reset support Do not disturb mode support Time display support connection Connect 1 time Bluetooth call support Watch phone book Can synchronize 100 contacts to the watch Exercise monitoring Record daily steps, exercise distance, and calories burned Sleep monitoring Automatically monitor the time to fall asleep, wake up and sleep quality Heart rate detection support Blood pressure test support Blood Oxygen test support Breathing exercise support Sport mode Support 100 sports modes Alarm clock support Sedentary reminder support Target reminder support