Shenzhen Tulan Electronics Co., Ltd.  

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2.4GHz wireless combo:

Description
Luxury wireless keyboard and mouse combo
Enjoy freely high frequency wireless digital technology
2.4GHz high frequency wireless digital technology
78 frequency 256 ID can get user without interrupt
Working distance is longer than 10 meters
Ergonomic design, anti-strain-injury
With 2PCS AAA batteries
Electrical property
Rechargeable connector: USB 1.1
Mouse work current: Working <=20 MA enter into alert 5mins later
Alert<= 10 MA enter into sleeping 5mins later
Sleeping <=20 UA