Red and blue magnetic charging case in-ear digital hearing aid with noise reduction

◆ Small and invisible design for comfortable wearing ◆ Can be worn on both sides (left and right ears) ◆ Powered by built-in lithium battery with long working time ◆ Host use time: up to 30 hours, charging time: 2-3 hours ◆ Charging case capacity: 400 mAh, can recharge two hosts 4-5 times ◆ Host charging method: magnetic adsorption charging ◆ Charging case charging method: charging cable ◆ Mechanical switch for easy operation ◆ High sound pressure level: peak OSPL 90 at 117 dB ±3 dB ◆ High-frequency average sound pressure level: 110 dB ±3 dB ◆ Full sound gain: 32 dB ±5 dB ◆ Frequency response range: 200 Hz to 4500 Hz ◆ Low equivalent input noise level: ≤ 25 dB ◆ Low total harmonic distortion: 53% ±3%

Material: ABS Power supply: USB Color options: red and blue pair, skin color pair Applicable parts: ear (head) Peak OSPL 90 (decibel sound pressure level): 117 dB HAF 90 OSPL (decibel sound pressure level): 110 dB Peak Gain (dB): 32 dB HAF/FOG Gain (dB): 29 dB Frequency range (Hz): 300-3500 Hz Distortion at 500 Hz: 3% Distortion at 800 Hz: 3% Distortion at 1600 Hz: 3% Equivalent input noise (dB): 25 dB Voltage: DC 3.7 V Current: ≤ 1.5 mA Charging time (hours): 4–6 hours Working time (hours): 20 hours Host battery capacity: 17 mAh Host weight: 2.1 grams Charging time of charging box: 3–4 hours Host size: 21 mm × 10 mm × 15 mm Charging compartment size: 45 mm × 21 mm × 40 mm