" Specification – (keyboard) Producer      Havit Interface      Usb Dimensions  493x202x40 mm Number of keys     114 Operating voltage  5 volt Workload     100 mA Key life        5,000,000 times Cable length1.5 m   Specification – (mouse) Producer      Havit Dimensions  117x64x38.6 mm Number of keys     6 Dpi    800-1200-1600-2400 Operating voltage  5 volt Key life        3,000,000 times Cable length1.5 m       Specification – (headphones) Producer      Havit Loudspeaker          40 mm Impedance   32Ω±10%Ω Frequency    20 Hz - 20 kHz Microphone6x5.0 mm Cable length1.8 m   Specification – (washer) Producer      Havit Dimensions  250x210x2 mm Material       Rubber + material, hemmed "