Brand New in Box Garmin VivoSmart 4

• Slim, smart activity tracker blends fashionable design with stylish metal accents and a bright, easy to read display.Physical size: Small: Fits wrists with a circumference of 122-188 mm. Large:Fits wrists with a circumference of 148-215 mm.Supported Application:Phone. Connectivity technology:Cellular. Wireless comm standard:Bluetooth
• Includes advanced sleep monitoring with REM sleep and can gauge blood oxygen saturation levels during the night with the wrist based Pulse Ox sensor. (Not a medical device and not intended for use in the diagnosis or monitoring of any medical condition)
• Fitness and health monitoring tools include estimated wrist based heart rate, all day stress tracking, Relaxation breathing timer, Vo2 Max, body battery energy monitor and more
• Features dedicated activity timers for walks, runs, strength training, yoga, pool swims and others; Lens material: Polycarbonate. Strap material: Silicone. Compatible Devices VIRB Ultra 30 , VIRB XVIRB X and VIRB XEVIRB XE
• Get vibration alerts for All notifications, including calls, text messages and more (text replies available for Android device users). Display resolution: 48 x 128 pixels
• Battery life keeps up with you; Lasts up to 7 days (excluding pulse ox sleep tracking) and is safe for swimming and showering, too