*Happy Shopping!* ································· Description: 100% brand new and high quality Super mini size and light weight, not easily to be seen. Convenient for watching movie, enjoying the drama, attending meeting, or having class, it could help you hear the sound clearly and loudly. Specification: Mini BTE Hearing aid: Max Saturated Sound Pressure: 130dB+5dB Sound Gain: ≥50dB Total Harmonic Wave Distortion: ≤ 5% Frequency response Range: 300--4000 Hz Input Noise: ≤ 30 dB Power Voltage :1.5 V Working Current : ≤4mA Battery Type: 1 x AG13 button cell battery (included) Color: As the picture shows Package Size: 9.5 x 7 x 3cm Quantity: 1 Set 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. If you hear a howling, check the ear (silica gel) is appropriate and whether the size of plug is tight, the appropriate choice of earplugs and plugged, make sure no air leakage. Keep the ear plug clean. Remove the battery if you don't use it for long time. Size for manual measurement, there may be a 0 to 1 cm error, belongs to the normal phenomenon. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x V-163 Hearing aid 2 x Earplug (different sizes) 2 x AG13 button cell battery 1 x User manual