PHYSICAL SIZE:Module: 41.7 x 37.6 x 7.8 mm (1.6? x1.5? x 0.3?) Sleep band S-M: 326 x 63.5 x 0.55 mm (12.8? x 2.5? x 0.02?) Sleep band L-XL: 452 x 63.5 x 0.55 mm (17.8? x 2.5? x 0.02?)
WEIGHT:Module: 14.5 g (0.5 oz) Sleep band S-M: 15.8 g (0.6 oz) Sleep band L-XL: 20 g (0.7 oz)
BATTERY TYPE:Lithium ion
BATTERY LIFE:7 nights with SPO2 during typical usage (8 hours of sleep)