Smart bracelet. Unused, brand new. In addition to the usual watch/calendar and stopwatch functions, this bracelet-type smartwatch also features a pedometer, distance measurement during exercise, and a calorie consumption calculation function. Comes with a simplified Japanese-to-English instruction manual. Materials: Silicone, ABS resin Waterproof: IPX67 (can be worn while swimming and bathing) Display: LED light Weight: Approximately 17g Dimensions: 16.5mm (width) x 240mm (length) x 8mm (thickness) Charging voltage: DC5V Alarm: Vibration only Please feel free to ask if you have any questions.