1815 Neck-hanging style Hearing Aid with Bluetooth

1)Product Overview: Ultra-Low Power 16-Channel Digital Hearing Chip – Operating at only 1.7 mA, with a wide frequency range of 200 Hz – 7500 Hz for efficient and stable performance. High Output for Severe Hearing Loss – Maximum output sound pressure level up to 115 dB, full-on gain of 45 dB, and average gain exceeding 38 dB, ideal for users with severe hearing impairment. AI Intelligent Sound Processing – Built-in algorithms include speech enhancement, feedback (howling) detection, echo cancellation, automatic gain control (AGC), and transient noise suppression. Supports a 64-band EQ equalizer for precise sound customization. 2-in-1 Bluetooth Hearing Aid – Integrated independent Bluetooth module with ENC call noise reduction, functioning as both a Bluetooth headset and hearing aid. Automatically switches between Bluetooth mode and hearing aid mode. Long Battery Life – Equipped with a 180 mAh charging case, delivering a total usage time of over 80 hours. Neckband Design for Convenience – Ergonomic neckband with physical buttons for easy operation, secure fit, anti-loss and anti-drop design, especially suitable for elderly users. Fully Certified – Meets China NMPA Class II medical device standards, and certified with US FDA Class I, FCC, CE, RoHS, and SCCP. ----- 2)Technical Specifications: Frequency Response: 200 Hz – 7500 Hz Equivalent Input Noise (EIN): ≤ 15 dB ± 3 dB Total Harmonic Distortion (THD): ≤ 1.5% Max OSPL90 @ 2900 Hz: ≤ 115 dB ± 4 dB HFA Avg OSPL90: 108 dB ± 4 dB Full-On Gain (FOG50) Max @ 2900 Hz: 45 dB ± 4 dB Average Gain (FOG50 HFA Avg): 38 ± 4 dB Rated Current Consumption: 1.7 mA ----- 3)Battery & Charging Charging Case Battery: Lithium-ion, 180 mAh (with protection board) Charging Voltage: DC 5V Charging Current: ≤ 300 mA Battery Cycle Life: ≥ 400 cycles Total Usage Time: ≥ 80 hours Charging Time: ≤ 2 hours Charging Port: USB Type-C How To Use As A Hearing Aid 1.Put the hearing aid in your ears; 2.Press the power ON/OFF key and keep for 3 seconds, turn on the hearing aid; 3.Chose a working mode in which the voice is perfectly clear by pressing the working modes switching key; 4. Adjust the volume to the most comfortable level by pressing the volume key. How To Use As A Bluetooth Headset After turning on the hearing aid, press the power ON/OFF key once to activate the Bluetooth, and search pairing name“1815”and connect to your Bluetooth device.   Play/Pause /Next/Previous/Volume adjustment: Operate your Bluetooth device Answer/Hang up: Press the power ON/OFF key once Refuse: Press the power ON/OFF key and keep for 2 seconds   This hearing aid supports automatic switching between hearing aid mode and Bluetooth mode, allowing users to pause music or end a call without the need for any operation. The headphones will automatically enter the hearing aid working mode. Operational Guidelines 1.The hearing aid has five levels of volume, which can be switched on and off by clicking on the volume keys. When you increase the volume to the maximum, you hear a longer“Drop”sound. Switch to the minimum volume, and you hear two shorter “Drop”sounds ； 2. This hearing aid supports four working modes, through pressing the working modes switching key can be mode cyclic switch, boot default mode is "Full-band amplification mode". 1“Drop” Full-band amplification mode 2 "Drop" High frequency amplification mode 3 "Drop" Intermediate frequency amplification mode 4 "Drop" Low-frequency amplification mode Users can choose the best hearing aid mode according to their actual hearing condition.