The WEKOME S28 True Wireless in-ear headphones are a true revolution in the music listening and calling experience. Their charging case, with an impressive 400mAh capacity, not only provides secure storage for the headphones, but also has an amazing projection feature The headphones use a new version of Bluetooth 5.3 wireless technology, which reduces latency and interference while providing extended battery life. The S28 not only offers exceptionally clear sound, but also an impressive music playback time of up to 3 hours on one full charge. This is ideal for music lovers who don't want to interrupt their entertainment, even during long journeys or a busy working day. Product features: - Bluetooth version: 5.3 - Communication range: up to 10 metres - Speaker diameter: 10mm - Frequency response: 20 Hz ~ 20 KHz - Weight of headphones: approx. 3.7g x2 - Earphone battery capacity: 30mAh x2 - Music playback time: approx. 3h - Battery capacity of case: 400 mAh - Charging time of headphones: approx. 50 min - Standby time: approx. 80 h - Projection function - 5 projector films included