A. Product and Product Data: The battery life in energy-saving mode is up to 12 months. This is a practical and stylish watch. It connects to the app via BT 4.0, which is stable, fast and extremely economical to use. B. Functions: - Pedometer: Set your health goals and view your daily activities. You can view and analyze the data at any time. - Simple and clear function menu, one-key operation, easy to use. - LCD displays steps, distance and calories. - 3 groups of buzzer alarms. - Professional stopwatch supports bar and background wakeup. - Protection grade IP67 (or 5atm), dustproof and waterproof, can withstand splashes and short-term immersion in water. - Standby for 12 months in economy mode without frequent charging. C. Notes: 1) Do not press any buttons underwater. 2) Do not disassemble the back cover by yourself. (Professional equipment is required to remove and install the back cover.) D. 5atm waterproof suitable for daily use such as swimming and fishing (not suitable for diving and snorkeling). E. 24-hour real-time exercise monitoring: data such as steps, walking distance and energy consumption are readily available. F. Professional stopwatch: wear it during exercise. G. Message alert tone: remind you of incoming calls and messages. H. Compatible with Android and iOS connection: use your phone to view your events or use the Sports + App. I. Range: Chip: Si-bw03; System: Ex Watch 1.0; Screen: Fstn / Full View; BT: Bt4.0 (distance to obstacles 10 m); Compatibility: Android 4.0 or higher, iOS 8.0 or higher; Waterproof: Ip67/5atm; Standby Time: About 5 months (high consumption); about 8 months (normal use); 12 months (energy-saving mode); In-device Application: Sports+; App Language: Chinese (traditional), Chinese (simplified), English, Russian, French, Italian, German, Spanish, Portuguese, Japanese, Polish, Turkish. J. Functions: Alarm Clock, Stopwatch, Activity Display (steps/calorie consumption/distance), Notification Reminder, Remote Camera, Luminous Dial, Automatic Time Display (date/week/hour/minute/second), 12/24 Hours. K. Specifications: Model: Mk16; Color: preto/czerwony/azul/gold (optional); Watch Case Material: Tpu; Strap Material: Tpu; Dial Diameter: 5.5*5.3 Cm/2.16*2.08 Inches; Dial Thickness: 1.7 Cm; Strap Width: 2.2 Cm; Watch Length: 28 Cm; Watch Weight: 72 Grams; Package Size: 10*8*6cm/3.93*3.14*2.36in; Package Weight: 143g/5.04oz. L. Package List: 1 * Watch, 1 * User Manual.