Colour: Black 

Input voltage: 6V DC Battery: 4 * 1.5V AAA (without battery) 

Red LED wavelength: 660nm +/- 5nm 

Blue LED wavelength: 470nm +/- 5nm 

 Output: 420mW without vibration 600mW 

size: 24 * 4 * 4.5cm 

 Comb size: 23.5 * 7 * 3cm 

Massage comb size: 6.5 * 2.5 * 2cm 

 Kit kit: 16.8*10.8*83cm 

Color box size: 28.5 * 16.5 * 8.5cm

Features: Hairdressing, scalp massage, promoting hair growth