Features： 1、USB Powered: This drying box needs a USB power supply, and you can use a mobile power supply to power it outside, just connect the USB cable. 2、Running Silently: The drying box uses a constant temperature dehumidification method, without a fan, which can achieve silent operation and will not disturb your sleep. 3、Moisture Removal: The drying box can effectively remove the moisture on the hearing amplifier, prolong the service life of the hearing amplifier, and prevent the occurrence of ear canal problems. 4、Strong Function: In addition to the constant temperature function, the drying box also has a timing function. The timing time is 4 hours, which is very intelligent. 5、ABS Material: The drying box is made of ABS material, which is very small and portable, and is very light and suitable for carrying. Specification： Item Type: Hearing Amplifier Dryer Material: ABS Constant Temperature: 45±5℃ Product Features: Constant temperature dehumidification Working Mode: USB powerd Timing Design: 4 hours Package List： 1 x Hearing Amplifier Dryer 1 x Instruction 1 x USB Cable