The rechargeable hearing amplifier has a built-in lithium battery, and fast charging supports 30 minutes of charging for 6 hours of use. Lightweight in-ear design, each pair of headphones comes with 3 sizes of earmuffs, comfortable to wear and reduces howling sounds. Easy to use, the blue device is for the left ear, the red device is for the right ear, and comes with a white charging box. Beautiful appearance, easy to distinguish the direction of the two devices. Obvious on/off button for easy operation. Wear two devices at the same time, or share with a loved one, or use one device to keep the other device charged as a backup, it's all up to you. .
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