With this Hearing Aid Battery Checker Case Keychain you are not only able to quickly see if the hearing aid battery is strong enough to power your hearing aid or not! Now you can quickly identify which hearing aid batteries still have some life in them to power your hearing aid, or which ones do not and you can throw them away.

This item also doubles as a hearing aid battery case keychain, that will hold 2 hearing aid batteries of any size! Now you can not only have your hearing aid batteries handy, but you can also quickly check to see which batteries are strong enough to use or not! No more wasting hearing aid batteries when you believe they aren't strong enough when they are!