Meco Rechargeable Adjustable Wireless Behind Ear Hearing Aid In-Ear Sound Amplifier

Features: 1. Combines a cosmetically appealing look with the smooth sound an internal speaker. 2. The channel digital sound processing allows the user to control volume and programs. 3. Filter out unwanted noise caused by airflow or wind Deliver direct, powerful, and smooth sound right into your ear. 4. Moisture resistant provides durability to most forms of moisture and wear. 5. Separate wire and headphone, more convenient and safety. 6. The In the Ear Hearing Aids also provide improved technology for reduced electromagnetic interference. Description: Material: ABS (Acrylonitrile Butadiene Styrene) Size: Approx. 42x47x10mm/ 1.65x1.85x0.39" Charger: DC 5V/ 50mA-500mA Battery: Lithium battery, 55mAh Max Sound Output: 130dB 5dB Sound Gain: 38dB 5dB Total Harmonic Wave Distortion: 5% Frequency Range: 300-4000Hz Input Noise: 30dB Voltage: DC 3.7V Current: 4mA Plug Adapter: EU Plug Adapter(We will send you a plug adapter according to your living country.) Indication: "O" is Power off "H" is Reduce the noise of low frequency "N" is Normal working mode "1-4" is Volume grade, "1" Min, "4" Max "DC 5V" is USB socket for charging Package Included: 1 x Rechargeable Hearing Aid 1 x EU Plug Adapter 1 x USB Charging Cable 4 x Earplugs 1 x English User Manual Note: 1.If you hear the whistling sound, please make sure if you put the earplug tightly, or if you use a appropriate size earplug. 2.Turn off the hearing aid when you charge it. 3. If your country's Voltage is 110V, please click the link to buy the Voltage Transformer: http://www.banggood.com/50W-110V-To-220V-Voltage-Transformer-Converter-Adapter-SC21C-p-932286.html More Details: