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产品名称：2.4ghz digital wireless headphones d1
features:
optical and coaxial connection
direct audio line-in
rf transmission auto off for power saving
enclosed soft ear-cushion
optical and coaxial connection
direct audio line-in
rf transmission auto off for power saving
enclosed soft ear-cushion
specifications:
carrier frequency: 2.4ghz
operating voltage: transmitter ac/dc 5v power adaptor
headphone 2 x1.2v aaa size rechargeable nimh batteries(included)
frequency response: 20 hz – 20 khz
working time: 12 hours
charge time: 6 hours
distortion: <0.5%
s/n ratio: 85db
working range: 30 meters