BG simply stands for black wand, green light.
 
USB charged facial massager.  
How to use close button Press and hold for 3 seconds to turn off the device. The buzzer will soundfor 3 seconds Short press to switch
1: Press and hold for 3 seconds to, power on, default to "Cieaning and brightening mode', the light bar will light up green, and the buzzer wilf sound for 3 seconds.
2. Short press to switch, "Warm and moisturizing mode ", light bar on blue light, buzzer short beep (constant temperature of 45 degrees Celsius, NTC temperature control
3. Short press to switch, "Deep cleansing mode" red light on the light'bar,heating activated (constant temperature of 45 degrees Celsius, NT temperature control)
When charging, the front blue light is on, the breathing rate is on, and the blue light is always on when fully charged. Less than 10% battery, red light flashing Automatically shut down after continuous use for 20 minutes Automatically turn on EMS micro current uponstartup