1 Pair Mini CIC Noise Canceling Rechargeable Invisible CIC Noise Canceling Hearing Aids In the Ear Amplifier Assist 2019 Product Information - Item Model:JH-A39 - Color:Black - Frequency Range:400-4000Hz - Max OSPL90:<=113dB ± 3dB - Average OSPL90:<=109dB ± 4dB - Total Harmonic Wave Distortion:<=7% - Reference Test Gain:23dB ±5dB - EQ Input Noise:29dB ±3dB - Battery:Built-in Lithium Battery Features: - Looks like a bluetooth headset,makes you more confiden, no discrimination anymore - Rechargable, Durable and reliable for long time use mini new design for portability, more comfortable - Small design Hearing aid，and convenient to carry - Weight less than 10 gram, Very very light weight. - Reduce noice, provides good sound quality. Help you hear the sound clearly and loudly, whether indoors or outdoors - Just need 1.5-2 hours to charging,But can be used for 10-16 hours in quiet environment.10 minutes to Charging can be standby for 1.5 hours. - Shockproof/Dropproof/user-friendly design,make it for a long time to use - We have two size hearing aid earplug to choose ,It will more fit for your earhole and didn't feel bloated and painful when you have wore for a long time. Package Included: 2 x Hearing aid 1 x Case 1 x User Manual