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

Features
Audible alarm(s): Yes
Accelerometer: Yes
Calories burned: Yes
Weather display: Yes
Personal goals: Yes
Blood oxygen sensor: Yes
Distance travelled: Yes
Heart rate monitor: Yes
Pedometer: Yes
Timer: Yes
Gyroscope: Yes
Calendar notifications: Yes
Recommended activity: Cycling, Running, Diving, Climbing, Swimming, Golf, Fitness
Smart notifications: Yes
Music control: Yes
Heart rate contact sensors: Yes
Activity tracker: Yes
Interval training: Yes
Quality of sleep: Yes
Time/distance alert: No
Electronic compass: Yes
Virtual partner function: Yes
Music player: Yes
Stopwatch: Yes
Heart rate measuring: Automatic
Call notifications: Yes
Calendar: Yes
Heart rate sensor type: Optical
Automatic daily activity detection: Yes
Advanced workouts: Yes
Weather forecast: Yes
Thermometer: Yes
Barometer: Yes
SMS notifications: Yes
Multisport mode: Yes
Clock mode: 12h/24h
Barometric altimeter: Yes
Alarm clock: Yes
Heart rate-based calorie computation: Yes
Activity monitoring: Yes
Heart rate data transfer: Bluetooth/ANT+

Design
Protection features: Water resistant, Waterproof
Market positioning: Sport watch
Watch case colour: Grey
Band colour: Grey
Wrist size range: 130 - 205 mm
Watch case size: 46 mm
Waterproof: Yes
Watch case material: Carbon Fibre Reinforced Polymer (CFRP)
Closure type: Single prong strap buckle
Shape: Round
Buckle colour: Black
Water resistance: 5 ATM
Band size: One Size
Lens material: Glass
Band material: Silicone
Removable strap: Yes

Power
Standby time (Bluetooth off): 25 h
Battery life (max): 30 h
Battery life: 14 day(s)
Battery life (GPS mode): 16 h

Weight & dimensions
Width: 45.6 mm
Weight: 49 g
Thickness: 1.29 cm
Depth: 45.6 mm

Network
GPS (satellite): Yes
Mobile network connection: No
GLONASS: Yes
ANT+ enabled: Yes
Galileo: Yes

Performance
Built-in microphone: No
Flash memory: 4 GB
Built-in speaker(s): Yes
FM radio: No
Built-in camera: No

Display
Display resolution: 260 x 260 pixels
Display diagonal: 3.3 cm (1.3")
Touchscreen: No
Always-on display: Yes
Display type: Digital
Display technology: MIP
Display diameter: 3.3 cm
Colour display: Yes
Watch glass type: Corning Gorilla Glass 3

Ports & interfaces
Bluetooth: Yes
USB port: No
Wi-Fi: Yes
Near Field Communication (NFC): Yes
Headphone connectivity: Bluetooth

Safety warning
Warnings: Avoid prolonged contact with water to prevent damage to the device., The battery in the watch should not be replaced by unauthorised persons. If the battery runs out, contact an authorised service centre., Do not expose the product to extreme temperatures or direct sunlight.