brand new and high quality 1. 4 VOLUME LEVELS: You can choose an appropriate level, multi-levels to meet different needs to improve the sounds of desires. 2. MINI SIZE: it is so small that it can hide behind your ears and it is convenient to carry wherever you want to go. 3.1.5V MINI BATTERY: Low power consumption in a 1.5v mini battery of up to 40 hours, 3 batteries available in the package. 4. GOOD GIFT: it is an for ideal helper whose volume up to 40 db with auto noise reduction, super sensitivity and microphone condenser. 5. WARNING: It is important to increase the volume control very gradually to avoid sudden increase in sound. Characteristics: 1. 4 volume levels, amplify sounds up to 40 decibels, a good choice for you. 2. Portable for travel, outdoors and some situations require sound amplification. 3.1.5v mini battery, low power consumption and durable. 4. Provide the best help for you with auto noise reduction, super sensitivity and micro condenser. 5. Gradually adjust to an appropriate level, prevent hearing loss. Specifications: Type: Cyber Sonic Battery: 3 x 1.5 V AG13 Button Battery Using the Time: 40 Hours Weight: 64 g Type: Sound Amplifier Material: Plastic Volume: Up to 40 db Quantity: 1 Set Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!