Wasabi Power Battery (2-Pack) and Charger for Contour 2350, 2450, 2900, C010410K and ContourHD, ContourGPS, Contour+, Contour+2 Includes 2 Wasabi Power batteries and 1 Wasabi Power charger with European plug and car adapter Batteries made with Japanese cells, each featuring 3.7V and 1300mAh, provide up to 3 hours of power depending on usage and temperature Batteries can also be charged in the Contour camera or with the Contour wall or car charger; No additional batteries are needed with the ContourROAM. The ContourROAM features a built in battery. Charge your Contour batteries outside of the camera, either on the wall or in the car Batteries and charger include 3-year manufacturer warranty