Brand New Never Used .....Small devise with daily fitness and wellness monitoring * clock features: date / time, stop watch, timer and alarm, health and activity tracking: heart rate, pulse or blood, oxygen saturation, calorie counter, pedometer, stress level's, relaxation breathing, safe for use in shower or swimming. Smart phone compatibility: iPhone and AndroidTM Size Small/Medium: 0.6" x 0.4" x 7.8" ( 15 x 10.5 x 197 mm) fits wrists with a circumference of 4.8" to 7.4" (122 - 188 mm )