Features: USB charging, convenient and fast, long battery life, 4 hours of full charge, 32 hours of continuous work. Simple mini design, fashionable color matching. It's not just a hearing aid, it's adjustable to fit both ears. Using the smart noise reduction chip, it can easily adapt to different sound environments. The volume is adjustable, so you can change it according to your preference. Small size, lightweight, comfortable wearing feeling, will not cause ear pain, its neutral design makes it the perfect choice for both men and women. You will receive 1 Hearing Amplifier with a charging base, 1 USB charging Adapter, and 5 silicone tips. Specifications: Material: ABS Color: Brown Peak OSPL 90 ( dB SPL): 125dB HAF OSPL 90 ( dB SPL): 115dB Peak Gain(dB): 35dB HAF/FOG Gain (dB): 30dB Frequency range(Hz): 300-5500Hz Equivalent Input Noise(dB): 28dB Voltage: D.C.3.7V Current: ≤4mA Full Charging Time: 4-6 hours Working Time: 32 hours Battery Capacity: 40mAh Package Size: Approx.10.5*10.5*4.5cm / 4.13*4.13*1.77in Package Weight: Approx.130g / 4.59oz Package list: 1 * Hearing Amplifier 1 * Charging Box 1 * USB Cable 5 * Earplugs 1 * User Manual