Feather-Light Comfort: Weighing only 4 grams per bluetooth headphone, these earphones wireless bluetooth feature a 2.5 mm titanium C-shaped bridge and a 3D ergonomic design that fits any ear shape. Whether it's a 10 hours workday or an intense workout, these wireless bluetooth headphones won't slip, won't get sore, and are only as light as a feather Enhanced Call Clarity: Muzen's proprietary call noise reduction algorithm uses directional sound transmission and reverse wave cancellation to block out background noise. These Open Ear Earbuds are ideal for commuting office workers-your voice will remain clear and private conversations won't leak out Immersive Audio Experience: Enjoy CD-quality sound with wireless earbuds, engineered with dual high-sensitivity drivers and stereo soundstage technology. Ideal for audiophiles demanding lossless clarity—every note, from classical melodies to bass-heavy beats, stays true to the original recording Lag-Free Bluetooth 5.4：Powered by Bluetooth 5.4, these true wireless earbuds deliver seamless connectivity for gaming, streaming, and calls. With a 30 ft range and <60 ms latency, enjoy real-time audio sync whether you’re jogging outdoors or binge-watching at home 38H Extended Playtime: The Muzen Trickle wireless earbuds bluetooth utilize a compact 300 mAh charging case that lasts up to 6 hours per charge, for a total of 38 hours. In a hurry? A 20-minute charge gives you 2 hours of playback, enough for your workout or commute. With up to a week of battery life, you'll never miss a moment, and you'll never have to worry about battery life again Trickle Clip-On Earbuds White