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Advanced 2.4 GHz wireless connectivity, transmission link secured with 128-bit Advanced Encryption Standard (AES) Wireless Range: 10 meters (33 feet) Connect/Power: Yes, on/off switch Battery Type: 1 AA; Connection Interface: USB receiver Battery Life (Not Rechargeable): 12 months DPI (Min/Max): 1000±; Unifying-Ready Mouse: No; Unifying-Ready Receiver: No Sensor Technology: Logitech advanced optical tracking