WIWU MARATHON SE AIR CONDUCTION WIRELESS HEADSET - BLACK

1 year warranty. "Air conduction wireless headset. 6 hours working time. Ultra-long standby. Running, Bicycling, Fitness, Call, Music. Stereoscopic voice. Lightweight design. Standard: GB/T14471-2013. Specification: Type – C. Wireless connection version: 5.0. Frequency range: 2.402GHz-2.48GHz. Wirel