Headphone:
Specification Horn diameter: 50mm
Sensitivity: 105+/-3dB
Impedance: 32 Ohm+/-15%
Frequency range: 20~20000 Hz
LED working voltage: DC5V +/- 5%
Headphone jack: USB (insert into the USB connector, the LED light will be on, and it will be off when unplugged) + 3.5mm stereo audio and microphone plug
Cable length: about 2.2m
MIC size: 6.0×2.7mm
Microphone sensitivity: -42+/-3dB
Microphone Impedance: 2.2K Ohm

Keyboard:
Specifications: number of keys 104
Switch Type: Membrane Key
Key life: 8 million
Operating stroke: 4+/-0.5
Operating Load: 55 +/- 7gf
Operating Voltage: 5V +/- 0.5V
Working current: less than 300mA
Interface type: USB
Support system: Win98, Win2000, Win XP, Vista, Win7, Win8, Win10 operating system
Cable length: 1.45m
Size: 446x140x31.3mm
Weight: 491.5g

Mouse:
Default DPI: 800/1200/1600
Lighting color: colorful lights
Interface: USB
Working voltage: 5V
Working current: less than or equal to 150MA
Cable length: 1.3m
Compatible system: Windows 98/2000/ME/NT/XP/Win7/Win8/Win10/Mac OS and other OS, plug and play
Size: 120x66x38mm
Weight: 98.3g