Description: 100% brand new and high quality. Super mini size and light weight, not easily to be seen. Adjust volume to the minimum before wearing, please. It is onvenient for watching movie, enjoying the drama, attending meeting, or having class, it could help you hear the sound clearly and loudly. Item 100% like the picture shown Specification: Mini ITE Hearing aid Material:ABS Size: 2 x 1.3 x 1.6 cm / 0.79 x 0.51 x 0.63 inch Max Sound Output: 110 dB 5dB Max Sound Gain: 30 dB 5dB Frequency Range: 300~4000Hz Input Noise: 40 dB Battery: A10 Button battery (included) Working Voltage: dc1.5V Working Current: 3mA Color: As the picture shows Package Includes: 1 Piece K-188 Hearing aid 3 Pieces Earplug (different sizes) 2 Pieces A10 Button battery 1 Piece User manual 1 Piece Box 1 Piece tool Note: Adjust volume to the minimum before wearing. Choose an earplug of slightly bigger size to avoid whistler. Increase volume gradually to avoid sudden increase in sound. Keep the ear plug clean. Remove the battery if you don't use it for long time. About Whistle , you can do this 3 steps to remove it. 1. Choose a suitable earplug to make the product sealed in the ear canal. 2. Low down the sound volume. 3. When you put into battery , please be quick , to put the product into the ear. Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Due to the battery can not be on the plane. All products dont included battery. Thanks!