Characteristics Blood oxygen sensor: Yes Tension Monitoring Function: Yes Advanced Training: Yes Personal information management Timer Alarm Recommended activity Rowing Skiing Hiking Swimming Climbing Golf Smart notifications: Yes Music playback: Yes Music control: Yes Thermometer: Yes Find my phone: Yes Sleep quality: Yes Renovated: No Calendar notifications: Yes Barometer: Yes Heart rate monitor: Yes Gyroscope: Yes Accelerometer: Yes Calories burned: Yes Design Watch case color: Black Closure Type: Single Pin Buckle Water resistance: 5 ATM Shape: Round Suggested gender: Unisex Buckle color: Gray Waterproof: Yes Strap color: Black Market positioning: Smartwatch Power Battery life: 15 days Battery life (max): 2.1429 weeks Battery operation time: 360 h Weight and dimensions Product weight: 52 g Network GLONASS: Yes Galileo: Yes GPS: Yes Efficiency Built-in speakers: No Support for mobile operating systems Android iOS Built-in microphone: No Built-in camera: No FM Radio: No Package contents User Manual: Yes Display Color display: Yes Display size: 33 x 33 mm Glass type: Corning Gorilla Glass DX Screen diagonal: 1.3 Touchscreen: Yes Display technology: LCD Display type: Digital Resolution: 260 x 260 px Ports and interfaces Headphone plug: Bluetooth Bluetooth: Yes Wi-Fi: Yes Safety warning Warnings Do not expose the product to extreme temperatures or direct sunlight. The watch battery should not be replaced by unauthorized personnel. If the battery is depleted, contact an authorized service center. Avoid prolonged contact with water to prevent damage to the device.