_The follow information are provided by the manufacturer:_
- 1000 DPI optical movement tracking resolution
- 2.4Ghz wireless operation
- Up to 14 hours continuous usage time -- recharges in 2 hours
- Up to 170 days stand-by
- Effective wireless range: up to 15 meters away
- USB 1.0~2.0 interface (acts as Human Interface Device / HID)
- Three differently sized finger rings included: small. medium, and large
- Note: this product may be shipped in white color when the black is unavailable.
Dimensions: 2.36 in x 1.57 in x 1.5 in
Weight: 3.25 oz
Shipment batch made between Dec 2, 2008 and Dec 4, 2008: a defect relating to the battery charging circuitry was discovered in shipments made between Dec 2 and Dec 4, 2008. DX will contact affected customers and offer full refund or store credit (at customer's choice).
All shipments are now checked to ensure complete battery charging functionalities.