Recommended activity: Cycling Smart notifications: Yes Timer: Yes Activity tracker: Yes Vibrating motor: Yes Music player: Yes Heart rate monitor: Yes Personal goals: Yes SMS notifications: Yes Weather display: Yes Ambient light sensor: Yes Quality of sleep: Yes Alarm clock: Yes Accelerometer: Yes Call notifications: Yes Stopwatch: Yes Heart rate measuring: Automatic Calendar notifications: Yes Heart rate contact sensors: Yes Heart rate sensor type: Optical Stress monitoring function: Yes Blood oxygen sensor: Yes Band colour: Black Water resistance: 5 ATM Shape: Rectangular Suggested gender: Any gender Colour name: Slate Closure type: Single prong strap buckle Removable strap: Yes Buckle colour: Black Market positioning: Smartwatch Band material: Silicone Watch case colour: Black Battery life (GPS mode): 26 h Battery life (max): 264 h Battery life: 11 day(s) Battery technology: Lithium-Ion (Li-Ion) Weight: 34 g Depth: 41 mm Thickness: 7.9 mm