CALYPSO SMARTIME WATCH K8500/3

Model: K8500 Fitness Tracker Compatible system: iOS (Version 9 and above) & Android (Version 4.4 and above) Functions: Heart rate variability (HRV). Blood pressure. Respiratory indications. Pedometer. Sleep monitoring. Alarm reminder. Many watch faces available. Ultraviolet radiation measurement. Multi-sport modes available: walking, running, cycling, hiking, football, basketball. Available languages: English, French, German, Italian, Russian, Japanese, Chinese (Simplified and Traditional). Language on the device: adapts to the language of the phone to which the watch is connected. User manual available in: English, French, German, Italian and Spanish Chip: Nordic NRF52832 Sensor: G-sensor Heart rate sensor: Huajing BD1668 Weather via built-in GPS: no Bluetooth: 4.2 Water resistance: IP68 – immersion up to 10 meters Manufacturing: Plastic injection molding (polycarbonate) Weight: 25.6g Screen size: 1.14 inches (2.89cm) Screen resolution: 135×240 pixels Screen type: TFT / IPS color screen Screen material: polycarbonate Minimum wrist width: 32mm Maximum wrist width: 65mm Fits a wrist of: 35 to 60 mm in diameter Total strap length: 248mm Strap material: thermoplastic polyurethane Battery type: Lithium Battery model: 401525 Voltage: 3.7V Battery capacity: 120MAH Battery life: 20 days in standby mode, 5-7 days in normal use mode (may vary depending on individual use) Charging method: USB Charging time: Approximately 2 hours Certification: FCC ID, CE, ROHS, Battery certification, Patented design