The truly wireless W09 headphones will take you to the next level of music. No more tangled cables - control your headphones with a touch! High-quality diaphragm balances high, medium and low frequency sounds. Bluetooth technology allows the headphones to be away from the transmission source up to 10 meters. Ultra-light each earbud weighs only 4 g, which makes the TWS earphones perfect for sports. Ergonomic design ensures a firm fixation of the handset and prevents the headphones from falling out of the ears. The case with a 450 mAh battery provides a total working time of up to 35 hours. Specification: Bluetooth version: 5.0 Material: ABS Range: up to 10 m Run time: 4-5 h (70% max volume) Standby time: 150 h Frequency: 20 - 20,000 Hz Handset battery capacity: 40 mAh Case battery capacity: 450 mAh Charging time of the handset: 1.5 h Total working time (including the case): 30-35 h Earbud size: 17 x 50 mm Case size: 55 x 45 mm