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Professional wireless & wired Keyboard: powerful 2.4GHz wireless connection with one tiny receiver that stays in computer. Limitless method for gaming and typing within 30 feet/ 10 meters in clear sight. Support both wireless and wired modes. Compatible with Win10/ Win10.1/Win8/ Win7/ Win XP/ Vista/ Linux and later OS.
Rechargeable batteries: Rechargeable keyboard with two high capacity 2, 000mAh batteries 4, 000mAh) lasts for 40 hours under fully charged ( 5 x 8 hours). when the keyboard runs out of power, the backlight will Flicker. With a 1.8M detachable Micro USB charging cable, It will not interrupt your gaming or typing. The indicator light will turn off when Fullly charged.