High-performance, military-grade smart watch with Japanese instruction manual ✨ ( '͜' ) It comes with two straps, a rubber strap and a metal strap, so you can use them depending on the situation. The watch face adopts a new design, 360*360 high resolution, high-definition large screen display, the image quality is clearer, and characters are displayed on a larger and more precise large screen. Comfortable visual sensation and excellent operability, the 1.39-inch large screen displays data such as notifications and steps, making information easy to see (* 'ᵕ' )♪ This smart watch has passed military standard compliance and has functions such as shock resistance, scratch resistance, IP68 dustproof and waterproof, and cold and moisture resistance (*ˊᵕˋ)⁾⁾ Bluetooth connection allows you to answer and make calls. You can make calls with the built-in microphone in the watch, so you don't need to operate your smartphone ( '͜' )ゞ [Accessories] ・2 straps: Metal band, Rubber band ・Charging cord ・Instruction manual (with Japanese pages) [Watch Specifications] ・Display size: 1.39 inches ・Sensors: Wrist heart rate monitor, Pulse Ox blood oxygen ・Battery capacity: 400mAh battery ・Battery life: 7-10 days in general use mode, 60 days standby time ・Charging time: about 2.5 hours [Functions] Voice calls, dial pad, recent calls, contacts, time/date, calculator, health monitoring, wrist-based heart rate, daily resting heart rate, abnormal heart rate alerts, SpO2 (blood oxygen) level measurement, blood pressure monitoring, breathing training, sleep score and insights, calorie consumption tracking, smart notifications (phone, text, smartphone app notifications), smartphone music and camera control, find phone, do not disturb mode, games, tracking, activity records, move bar, auto goal, calorie real-time pace and distance, etc. Pedometer/alarm/incoming call notification & rejection/music control/remote shooting/brightness adjustment/wrist raise lighting/timer free setting/weather forecast/stopwatch/280+ watch face free change/100 kinds of exercise modes/ Bluetooth calls/music playback/voice assistant/vibration ON/OFF adjustment/2 types of menu style change/calculator/mini game [Smartphone Compatibility] Android 4.4 or iOS 8.0 or later