The ACMUBAT160N by American Tech Network is an extended life battery kit that is created to sustain your binoculars or monoculars for up to 15 continuous hours. Perfect for all-day activities such as scouting, camping, bird watching, or surveillance.Moreover, this versatile battery pack is not limited to ATN devices alone. It can also power your non-ATN gadgets that are compatible with a micro USB. The ATN Extended Life Battery kit is specially designed to match the ATN range of Smart HD Optics - BinoX-HD, OTS-HD, and BinoX-THD.