Flex Band Wireless Neckband 15hr Play Time,TF Card Player and IPX4 Waterproof

CALLMATE Flex Band Wireless Multifunctional Neckband With 15 Hour backup/play time, TF card Player and IPX4 Rated. Advanced 10mm dynamic drive units bring you unparalleled music experience with high bass. CALLMATE Flex Tune Wireless Multifunctional Neckband comes with the ability to make or take hands free calls and 15 hours of battery life. Plug in TF card (memory card) to play music, long press the power button to enter MP3 playback mode, pull out TF card during Bluetooth playback. Adopt 4.2 new version of Bluetooth chip, compatibility, stability, functionality and other aspects have been significantly improved Dynamic speaker unit + metal composite diaphragm. Restore true sound quality, HIFI sound