GP Ultra Alkaline 2 pcs AAA Size Thin Battery product is an ultra alkaline AAA slim pen battery type powered by 1.5 volt voltage. This battery has a shelf life of 7 years and is non-rechargeable. It can be used in many devices such as MP3 players, MD/CD players, flashlights, digital cameras, personal assistant digital devices, electronic games, motorized toys, lapel microphones, toys and remote controls.