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