Wireless 2.4 GHz radio wave (range up to 30 feet). Plug & play nano receiver (easy to use). Auto sleep feature (energy saving). PC & MAC compatible. AA battery included. 3 CPI 1000/1500/2000 conversion (default at 1000). Unit works on most desk surface except glass. Complies with CE, FCC, ISO 9001, RoHS. 2 7/8" W x 4 1/2" H x 1 1/2" D
