Product Information

Pocket-Sized Design: You can take the wireless mini mouse wherever you take your laptop, thanks to its pocket-sized compact design (102*62*36 mm), 6-million-click lifespan.
2.4GHz Wireless: A more secure and precise experience than the traditional FM radio system with an increased working distance of up to 10m. 3 Adjustable DPI Level (1000/1500/2000), plug and play, no driver needed.
Unique Tru-Wave Technology: Provides precise, smart cursor control over many surface types. TeckNet Co-Link technology - after pairing there's no need to re-establish pairing after a signal loss or shutdown
Energy Efficient: The auto power-off function switches off the mouse when the USB Nano receiver is disconnected, or the PC is switched off to give 18 months battery life from just one AA battery. (Battery NOT included)
Comfortable & Contoured shape with soft rubber grips provides all-day comfort. Compatible with Windows XP, Vista, 7, 8, 8.1,10.

Manufacturer's description

Extra long battery life
With the smart auto sleep function you can get up to 18 months (dependent on battery choice and usage). The battery compartment also features a neat little slot to keep the nano receiver in so it doesn't get lost.

• http://www.tecknet.co.uk/m005-black.html