Main material: ABS+ PMMA Package size: 27*14*6cm Set weight: 0.35kg Configuration: English manual / host / USB plug-in cable Product mode: 3 major modes - one key to start Applicable scene: fitness equipment / health massage / fitness body / sports trend Steps for usage: 1. Connect the data cable, turn on the power, the instrument enters the standby state, and the red indicator light is on. 2. Press and hold the switch button (CENTER key) on the instrument for 3 seconds to turn on the instrument, the instrument starts to work, and the blue indicator light is always on 3. The automatic mode is enabled by default, and the mode can be adjusted by pressing the switch key. There are 6 modes in total 4. The + key is the strength enhancement key, and the - key is the strength weakening key 5. During use, press and hold the + key for 2 seconds to turn on/off the vibration function, and long press the - key for 2 seconds to turn on/off the pulse function, and choose according to your needs. 6. Press and hold the power key (CENTER key) of the instrument to power off. Please allow slightly size errors due to manual measurement. Thank you for your understanding!