Hearing Aid BION V-99 / Alat Bantu Dengar Tipe Pocket V99

Spesifikasi -Pocket Hearing aid -Max Sound Output: 129 +/-4 dB -Max Sound Gain: 58dB +/-5dB -Harmonic Wave Distortion: f 1000Hz 15%,f1000Hz10% -Frequency Range: 450~3500hz -Input Noise: 30 dB -Battery: 1 x AA battery (included) -Working Voltage: dc1.5V -Working Current: 4mA -Item Size: 6.1 x 4.1 x 1.6cm -Package Size: 18 x 9.8 x 3.8cm -Net Weight: 60g Package included: 1 x V-99 Hearing aid 4 x Earplug (different sizes) 1 x Carrying Box 1 x User manual 1 x Baterai AAA Note: -Adjust volume to the minimum before wearing. -Choo100se 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.