Built-in lithium battery; The TR503 FM transmitter built-in 450mAh lithium battery. Lightweight and easy to wear; The TR503 FM transmitter only 50g; easy to wear and operate. Long transmission distance; The transmission distance of 30m(98ft) in the open air; Easy to use for school; speech; training; conference etc.
Long transmission distance; The transmission distance of 30m(98ft) in the open air; Easy to use for school; speech; training; conference etc Sensitive microphone; 15 levels of transmit volume adjustable; only a portable headset FM transmitter; cannot connect to the device via Bluetooth Built-in lithium battery; The TR503 FM transmitter built-in 450mAh lithium battery show frequency; simply pair the FM microphone to the speaker with the same frequency and you are ready to go Lightweight and easy to wear; The TR503 FM transmitter only 50g; easy to wear and operate
Built-in lithium battery; The TR503 FM transmitter built-in 450mAh lithium battery. Lightweight and easy to wear; The TR503 FM transmitter only 50g; easy to wear and operate. Long transmission distance; The transmission distance of 30m(98ft) in the open air; Easy to use for school; speech; training; conference etc.