Smart bracelet heart rate oximeter step bracelet $ 37.91 Material: ABS Display 1. 3 inch IPS full touch screen. 240 *. 240px resolution Case color black White ABS + PC + Liquid Silicone Strap CPU nRF52832 Battery capacity 400mAh Support system i0S8.5 and above, Android4.4 and above APP DA FIT Height: 62mm Width: 38mm Strap: 260mm
