2.4GHz FHSS TechnologyThe APH100 TV wireless headphones combine leading audio technology 2.4GHz FHSS single-channel high-speed transmission, which has the advantages of low power consumption, strong anti-interference and long transmission distance. Free you from the restriction of the cable, a range of up to 30 m to move freely. Please keep the headset and transmitter away from WIFI devices. Easy to set upThe APH100 is particularly easy to use. One cable connects, foolproof setup and ease of use add to your convenience. Connect to TV via multi port, such as 3.5mm RCA, compatible with most TVs. If your TV only supports fiber, please send us an email and we'll help you out. Stop Hearing loss in timeAPH100 is a non-closed in-ear TV headphone designed for the elderly with poor hearing ability. It differs from over-ear and full in-ear headphones (uncomfortable and causes hearing loss) in that it doesn't squeeze the ears or close the ear canal. The outgoing sound is far fr