DETAILS: Socket Communications the mobile connection company, provides the broadest range of network connection products. Socket's products enable mobile professionals to connect their handhelds to computer networks anytime, anywhere. Socket's range of connectivity products support different protocols and different connection speeds so that mobile professionals can use their handheld devices to check their email, connect to corporate databases, and browse the Internet from a hotel, airport, or even the back of a taxi. Product Description: Socket Replacement for GPS and Wireless Modem - external battery pack - Li-Ion Product Type: External battery pack Dimensions (WxDxH): 1.2 in x 0.2 in x 1.9 in Weight: 0.8 oz Battery: Lithium ion - 900 mAh Manufacturer Warranty: 1 year warranty UPC: 0758497040084