Wirelss keyboard 1) futuristic radio frequency (rf): 2.4ghz technology 2) super slim mechanical design and long battery life 3) stylish shape design 4) scissor-type key structure for ultra smooth, tactile and quiet key strokes 5) responsive slim key design promotes effortless typing 6) power saving 7) media hot keys: play, mute, volume+, volume-, next, previous, explore, e-mail, my computer, power off Keyboard specifications: hk-806g Dimensions: 410 x 162x 23 mm Weight: 712g +/-20g Channel: 1 channel Id: 65535 sets Radio frequency: 2.4 ghz Operatind distance: 10 meters Key number: 104 keys (with multilingual support) Battery life: 600 hours (continuous operation) Battery: 2 aaa (alkaline) Receiver: r3 Dimensions: 87*65*28mm Interface: usb 1.1 With recharger function, suitable for no.: 5 / 7 batteries.