Wireless invisible hearing aid for the elderly $ 51.10 Specification: Material: plastic Color: skin tone, Quantity: 1 pair Maximum sound output: 115 +/- 3dB Sound gain: 28dB +/- 5dB Total harmonic distortion:3% Frequency range: 300-3500MHz Input noise: 32dB Voltage: DC1.5V Current: 2mA Hearing aid (each): Built-in 25mAh rechargeable battery for charging Time: 6 hours Working time: 16 hours Packing size: 170 * 90 * 50mm / 6.69 * 3.54 * 1.97 inches Package weight: 210g / 7.41oz Note: The charging box has no built-in battery and is powered by most USB devices. Due to the different display and light effects, the actual color of the product may be slightly different from the image color, thank you for your understanding . Type1-Packing list: 1 pair of headphones 1 Charging box 6 * 6 * earplugs 1 * small brush 1 Charging cable
