Features: 100%?Brand?New?and?High?Quality Sound?amplifier?helps?to?amplify?sound?up?to?30x?with?low?background?noise. Inbuilt?battery?convenient?to?recharge. There?is?no?battery?required?to?replace?again. Fully?charged?replaceable?artery?can?stand?up?to?8-10?hours?continues?use. Best?hearing?keep?the?ear?tips?clean?and?replace. Interchangeable?ear?tips?to?seal?out?the?noise. Specifications: Plug?Type:?US Battery:?1.2V Working?Current:?Less?Than?3mA Signal?to?Noise?Ration:?Less?Than?28db Frequency:?100-4000Hz Gain:?30db Distortion:?Less?Than?6% Color:?Skin?Color Total?Net?Weight:?60g Package?includes: 1?x?Sound?Amplifier(with?one?earplug?tip) 1?x?Charger(US?Plug) 1?x?Charger?Docking?Station 5?x?Silicone?Earplug?Tips 1?x?Brush