The M-F8 Earbuds are lightweight, ergonomic and anti-dropping with 20 hours of battery life. They have intelligent noise reduction, HD surround sound quality, low latency and IPX4 waterproof rating. The 13mm high-quality moving coil unit produces lossless HF sound quality. Comes in black, white, blue, red, and green. Features 1. Very light: single ear is only 3.5g, 108-degree elevation design. Ear-hanging design: Ergonomics, anti-dropping ear-hanging type, according to the shape of human auricle. 2. Super standby: 20-hour battery life, charging once, can be used for one week. 3. Deep noise reduction: Intelligent noise reduction for high-definition calls and voice reduction technology for intelligent voice calls greatly optimize the clarity of sound. 4. HD surround sound quality: professional sound quality, 13mm high-quality moving coil unit, with large composite diaphragm moving coil, brings lossless HF sound quality. 5. Low latency: Bluetooth 5.2 upgraded version tends to low latency. Headphones support IPX4 waterproof splash, sweat splash is not afraid, exercise headphones. Specification Material: ABS, Silicone Color: Black, White, Blue, Red, Green Weight: 16 g Size: 8 x 6 x 1 cm Battery Capacity: 75 mAH Charging time: 1.5 hours Using time: 20 hours Standby time: 200 h Bluetooth version5.2 Operating voltage: 3.7 V Transmission distance: 10 m Package Include: 1 x Earphone 1 x Earcap 1 x Data Cable