Characteristics Personal Goals: Yes Heart rate data transmission: ANT+ Heart rate monitor: Yes Calendar: Yes Personal information management Timer Calendar Alarm Stopwatch Distance traveled: Yes Calories burned: Yes Accelerometer: Yes Ambient light sensor: Yes Interval training: Yes Timer: Yes Alarm: Yes Recommended activity Bicycle Fitness Swimming Running Tennis Smart notifications: Yes Find my phone: Yes Stopwatch: Yes Music control: Yes Sleep quality: Yes Built-in tape measure: Yes Activity monitoring: Yes Fitness Test: Yes Heart rate-based calorie calculation: Yes Altimeter: Yes Weather forecast: Yes Barometer: Yes Design Strap color: Rose gold Shape: Round Watch case size: 40 mm Strap material: Silicone Waterproof: Yes Security features: Waterproof Market positioning: Sports watch Housing material: Carbon fiber reinforced polymer (CFRP) Water resistance: 5 ATM Lens material: Glass Product color: Ivory Power Battery life: 5 days Battery type: Lithium-ion (Li-Ion) Battery operation time: 120 h Supported battery type: Built-in Rechargeable battery: Yes Battery life (max): 1 week Weight and dimensions Product depth: 40 mm Product width: 40 mm Thickness: 1.1 cm Product weight: 33.8 g Network GPS: Yes Mobile network connectivity: No Efficiency FM Radio: No Supported memory cards: Not supported Support for mobile operating systems iOS Android Built-in camera: No Package contents Charger: Yes User Manual: Yes Display Touchscreen: Yes Display technology: OLED Display type: Digital Display size: 8.6 x 18.5 mm Resolution: 72 x 154 px Ports and interfaces Wi-Fi: No Bluetooth: Yes Other functions Number of batteries supported: 1 Logistics data Number of pieces: 1