600 or 100 blisters of 6 hearing aid batteries of the quality brand Rayovac from the Energizer company - made in UK. The hearing aid batteries Rayovac Extra Advanced are characterized by a very stable performance and an extremely long runtime. With Active Core Plus technology with Air Optimization, Energizer has created a top product that shines with longevity, reliability and performance. No hearing aid battery lasts longer*!
*Comparison test Type 312 to leading competitors. Based on ANSI/IEC performance test.