Jfsonic Neckband bluetooth headphone Incoming call vibration function Support external TF card Megnetic Design Easy for User to Carry Anywhere by simply wearing around the neck Ergonomic Built & Design for Sports Purpose Multifunction Key & Volume Control Key Available Advanced Bluetooth Technology v5.0 Compatible with iOS and Android Devices Standby Time 120 Hours Frequency 20HZ-20KHZ Optimal Distance 10 Meter Music Playback around 6 Hours Charging time 2 Hours 103±3dB Sensitivity 200mAh Lithium Polymer Battery
