Ultra Slim Multimedia keyboards Mechanical Function: Switch travel: 2.4+ / -0.2mm Keystroke life: 10million times Key switch elasticity: 50+ / -7g Power Requirement: Working voltage: 5.0+ / -0.25Vdc Working current: Less than 30mA Power: Less than 0.5 wt Environment and Temperature: Working temperature: 0-50degrees Working humidity: None Condensation under 20% ~ 90% humidity Specification: Product dimension: L364mm* W134mm* H20mm Key layout: 103/ 105/ 106/ 107 keys are available , 8 hotkeys Product net weight: 351g Products Compatibility: Support Windows 98 / 2000/ ME/ NT/ XP/ VISTA/ WIN 7 system Support all languages versions, compatible IBM PC/ PS2/ AT/ USB/ U+ P Packing: Color box size: 378* 158* 30mm Carton size: L395mm* W330mm* H340mm Packing method: Color box, 20PCS/ CTN. Two layers