Panasonic CR123A Lithium battery 3V Photo Lithium Battery, 0.67" Diameter x 1.36" H (17.0 mm x 34.5 mm), black/Gold/Blue Non-Rechargeable Lithium battery Rated 3 Volt, capacity 1.55Ah Size 0.67" Diameter x 1.36" H (17.0 mm x 34.5 mm)