WK Design is the brand. V29 model Type of headphones: in-ear Material: silicone, TPE, and ABS Bluetooth version 5.0 Distance of transmission: 10 m 90 mAh battery Standby working hours: 180 hours Music-related work hours: four to five hours Two hours are needed for charging. Extra features: The handle's remote control Included in the set are headphones, a 50-cm USB/micro USB cable, and a warranty card.