F-16 Pocket High Power Wired Box Mini Hearing Aid Sound Amplifier Receiver(Black)

1. Material: ABS 2. Sound output (max): 129+/- 5dB 3. Sound gain (max): 55dB+/-5dB 4. Frequency range: 450~3500 hz 5. Battery: 1 AA batteries (batteries not included) 6. Operating voltage: DC1.5V 7. Product size: 6.6 x 4.3 x 1.6cm 8. Net weight: 29g Package includes 1 x hearing aid 4 x ear plugs (different sizes) 1 x User Manual 1 x Box