Description:Working frequency: 2.4GCase material: ABSPower: 1x AAA battery (not included)Working current: 5mA (MAX)Sleep current: 0.5mAEffective distance: about 10MProduct size: 13.3 *12.8*2.2cmColor: Black / WhiteWork:Temperature: 5 ° C - 50 ° CHumidity: 10%-85%Storage:Temperature: -20-70 ° CHumidity: 5%~95%Applications: desktop, laptop, tabletKey mechanical working life: key cap life exceeds 10 million timesSystem: Windows XP, Windows Vista / 7/8/10, USB portNote:Due to the different display and lighting effects, the actual color may be slightly different from the color of the image.Due to manual measurements, please allow 2-3 cm to be different.Characteristic:1: No switching plug and play all kinds of laptops and desktops can be used when plugged in2: Round key cap design, comfortable and durable, simple and fashionable round key cap with finger web design, comfortable and labor-saving3: Fashionable, light and portable, reasonable design and layout create a small keyboard with small body and great wisdom4： Intelligent sleep power saving and environmental protection, low energy saving technology is adopted, one battery can be used for four months without operation for 10 minutes5: It can store 2.4 Amini receiver, with an effective distance of up to 10 meters. When not in use, it is stored in the keyboard slot, which is not easy to lose6: Compatible with a variety of operating systems, it can work normally on all kinds of systems, with strong compatibility and multi-purposeReminder:If the product cannot be used, the first step can be checked as follows: plug and unplug the ∪ sb port again, and check whether the interface is normal. The second step is to restart the computer, and let the computer find the device again. The third step is to replace it, and try to use it on other computers. The fourth step is to contact us in time, and we will try our best to serve you.