These are the top of the line batteries from Rayovac, with up to a 4 year shelf life and guaranteed freshness. Rayovac Proline are only sold through Audiologists and Hearing Aid Dispensers.
According to Rayovac, Proline Advanced are the longest lasting battery and Rayovac is a leader in hearing technologies! Rayovac uses digital imaging and 104 quality checks to test every battery so we can ensure you receive a powerful consistent battery every time.
Please note that Size 10A and 10 are exactly the same and fully compatible. Packaging may vary, due to child resistant packaging laws in the USA.
