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• Rechargeable Hearing Aid Invisible Digital Sound Amplifier for Deafness aged Min Wireless ears listening to aids Powerful Product Features: Product Name: Rechargeable Mini Hearing Aid 1 Long standby time(about 48-72h) 2 Safe USB Charging( Do no longer should change battery ) 3 Digital chip(Better sound quality) four Intelligent noise reduction 5 Anti-howling 6 Bluetooth hearing reduction pls contact seller Product parameters: 1 Material: scientific - grade TPE environmentally friendly materials 2 Weight: about 3g three Current consumption: 1 four Working time after being completely charged: about 48-72H five Maximum Output: 129+4dB 6 Maximum Gain: 29±3dB 7 Total Harmonic Distortion: ≤7%+3% eight Equivalent Input Noise: ≤28 9 Response:300-5000Hz Packing list: Principal mechanical device * 1 Earplugs * 4 Cleaning sweeper * 1 Charger * 1 Charger cable* 1 Charging box*1 Britzgo equipment box * 1 There are three colors to choose:white,black,skin There are three colors to choose:white,black,skin Here is the Tips there are many stock, you can place the order reassuring, will ship within 24 hours Here is the Tips, if there may be the beeps and whistle,try the ensuing way: 1 adjust decrease volume 2 the suitable ear plug three sure while you put the earplug tightly,sound leak will make the Whistle function the tool into your ear Once the hearing aid is correctly seated in your ear,the whistling will generally quit

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