Bluetooth Wireless Verson: 4.1 Standby Time: 300-320h Charging Time: about 2h Duration: 8.9h Weight: 24g Size: 40*40*18.64mm Operative range: up to 30feet(10meters) Yincine L8free combination Wireless Bluetooth headset compatible for 98% electronics available in market. Bluetooth adapter is design with 3.5mm audio. Only one audio line, then can convert the cable audio equipment to the wireless audio device. Brand Yincine SKU 100059037_NP-1020308045 connector_1 3.5MM Bluetooth Yes Wearing type In-Ear wireless_connectivity Bluetooth Model L8