Trust Wireless Laser Mouse MI-7500X. Device interface: RF Wireless, Movement detection technology: Laser, Movement resolution: 800 DPI. Battery type: 2 x AA (rechargeable). Bundled software: CD-ROM (software). Minimum processor: Pentium, Minimum hard disk space: 10 MB, Minimum RAM: 64 MB. Mouse dimensions (WxDxH): 67 x 41 x 129 mm