Product parametersProduct name: Induction correction with digital display voice buttonsProduct color: blackProduct size: 14x14x4cmProduct weight: 0.106kgPacking size: 14x14x4cmController size: 6.5x6.5cm, elastic belt width: 2.2cm, length of single elastic belt 55cmProduct features1: Add voice broadcast (enable or disable)2: New counter display screen (count hunchback times)3: high frequency vibration reminder4: Accurate Angle real-time monitoring, vibration alarm over 25Use steps:Full charge with USB cable, red light flashing when charging, full charge green light onLong press for two seconds to turn on the vibration and voice at the same timeShort press to disable the voice, and short press again to enable the voiceLong press two seconds to close, long press five seconds count reset clearProduct list1X correction tape, 1xUSB cable, 1X English instruction manual