NEW Version Battery Display: BlueFinger Wireless keyboard and mouse feature with power percentage display function, which can accurately know the current battery level, helps you to rationally arrange usage time and charging schedule, avoid running out of power, and make sure your keyboard and mouse are always ready to use. 2.4 GHz Stable Connection: Adopt 2.4GHz wireless connection technology, providing 10M ultra-long effective connection distance, excellent connection stability without latency, say goodbye to annoying lags and interruptions while you work, enjoy the wireless freedom. Note: The keyboard and mouse share ONE receiver, located underneath the mouse. Rechargeable & Long Battery Life: The wireless mouse and keyboard are equipped with rechargeable 500mAh and 1500mAh lithium battery respectively, can be easily recharged by 1.5M Type-C charging cable(included); 500 Hours nop-stop use time without light, 50 Hours of backlight nop-stop