Garmin Forerunner 255 3.3 cm (1.3) MIP 46 mm Digital 260 x 260 pixels Grey Wi-Fi GPS (satellite)

Display resolution: 260 x 260 pixels | Built-in microphone: No | Bluetooth: Yes | Width: 45.6 mm | Warnings: Do not expose the product to extreme temperatures or direct sunlight. | Warnings: Avoid prolonged contact with water to prevent damage to the device. | Weight: 49 g | Display diagonal: 3.3 cm (1.3") | Flash memory: 4 GB | Warnings: The battery in the watch should not be replaced by unauthorised persons. If the battery runs out, contact an authorised service centre. | Thickness: 1.29 cm | Depth: 45.6 mm | Protection features: Water resistant, Waterproof | USB port: No | Personal goals: Yes | Near Field Communication (NFC): Yes | FM radio: No | Shape: Round | Watch case colour: Grey | Recommended activity: Fitness | Watch case size: 46 mm | Electronic compass: Yes | Wi-Fi: Yes | Built-in camera: No | Weather display: Yes | Mobile network connection: No | Battery life: 14 day(s) | Battery life (max): 30 h | Advanced workouts: Yes | Interval training: Yes | Accelerometer: Yes | Recommended activity: Running | Closure type: Single prong strap buckle | Colour display: Yes | Time/distance alert: No | Recommended activity: Swimming | Recommended activity: Golf | ANT+ enabled: Yes | Timer: Yes | Heart rate monitor: Yes | Watch case material: Carbon Fibre Reinforced Polymer (CFRP) | Blood oxygen sensor: Yes | Distance travelled: Yes | Standby time (Bluetooth off): 25 h | Touchscreen: No | Barometer: Yes | Gyroscope: Yes | Band colour: Grey | Band material: Silicone | Calendar notifications: Yes | Recommended activity: Climbing | Audible alarm(s): Yes | Pedometer: Yes | Calendar: Yes | Waterproof: Yes | Market positioning: Sport watch | Thermometer: Yes | GPS (satellite): Yes | Built-in speaker(s): Yes | Clock mode: 12h/24h | Recommended activity: Cycling | Headphone connectivity: Bluetooth | Calories burned: Yes | Barometric altimeter: Yes | Display technology: MIP | Wrist size range: 130 - 205 mm | GLONASS: Yes | Recommended activity: Diving | Display type: Digital | Galileo: Yes | Heart rate-based calorie computation: Yes | Alarm clock: Yes | Heart rate data transfer: Bluetooth/ANT+ | Always-on display: Yes | Activity monitoring: Yes | Heart rate contact sensors: Yes | Display diameter: 3.3 cm | Lens material: Glass | Battery life (GPS mode): 16 h | Music control: Yes | Music player: Yes | Weather forecast: Yes | Call notifications: Yes | Stopwatch: Yes | Heart rate measuring: Automatic | Watch glass type: Corning Gorilla Glass 3 | Multisport mode: Yes | Smart notifications: Yes | Automatic daily activity detection: Yes | SMS notifications: Yes | Water resistance: 5 ATM | Band size: One Size | Virtual partner function: Yes | Heart rate sensor type: Optical | Quality of sleep: Yes | Activity tracker: Yes | Buckle colour: Black | Removable strap: Yes