Features of the Simplicity Smart Touch Hearing Aid Pair: * Occlusion free open ear design ensures no “plugged up” feeling * Professional quality components * Miniature size of device is lightweight and durable * Reduces feedback and whistling noise * A convenient push-button control allows optimum clarity * Four memories pre-programmed in laboratory * Poly micro tube design * Beep alert for replacement of battery * Size #10 zinc-air battery is used * Product Weight (in pounds): 1.0 (shipping) * Product Dimensions (in inches): 7.0 x 2.3 x 0.7 (L x W x H) * Model No.: Simplicity ST P