The Williams Sound BAT 026 is a rechargeable NiMH Battery. 1.2 Volt, 1500 m/A. BAT 026 Features and Specifications: 1.2 volts NiMH battery for use with Williams Sound products and accessories. List price: $18.00Price: $18.00 Quantity * SKU: BAT 026-2Catalog: Assistive ListeningBrand: WilliamsDimensions: 1 in × 2 in × 2 inWeight: 0.25 lb