The Energizer Hearing Aid is long lasting like its brand of premium battery products. The easy-to-read size call out, longer tabs for easy placement and EZ Turn & Lock design keeps unused batteries safe and secure. Batteries are easily removable from the access tab on the back - but only when you want to remove them; you are in control with the Energizer EZ Turn & Lock package. 100% recyclable packaging and zero-mercury batteries responsibly power you with less impact on the environment.