USAMS US-YD004 S4 Sports Bluetooth 5.0 Earphone(BGYDEJ01) APC Performance: Minimum of 4 MB/sec

Performance: Minimum of 4 MB/sec write and 14 MB/sec read

reducing the likelihood of site visits and increasing network up-time

Light weight material

Multi-mode wireless connection: connect via Bluetooth 3

50 millimeter focal length and maximum aperture of f/1

USAMS US-YD004 S4 Sports Bluetooth 5.0 Earphone(BGYDEJ01) APC Performance: Minimum of 4 MB/secUSAMS US YD004 S4 Sports Bluetooth 5. 0 Earphone(BGYDEJ01)Key Features Bluetooth 5. 0 chip, faster and more stable transmission 10mm custom speaker, high resolution composite diaphragm, delivering a rich range of clear treble full alto and deep bass Noise reduction makes clear phone calls Automatically search and pair after power on, reconnect to the recently paired device Three buttons control, convenient to use Two earphones are connected together,