Lightweight: One headset weighs only 4.5 grams, compact and lightweight, ergonomic in-ear design, comfortable and easy to wear. Magnetic charging: With a magnetic charging case, the headset automatically fits close enough to charge immediately. High Definition Calling: Omnidirectional MEMS microphone with call noise reduction technology, effectively isolating ambient noise. Composite Diaphragm Dynamic Coil: With a large composite diaphragm dynamic coil, the bass is rich and mellow, and the listening experience is more delicate. BT 5.0 chip: With high responsive transmission speed, no matter for games, music or calls, it can achieve smooth and stable. Features: Lightweight: One headset weighs only 4.5 grams, compact and lightweight, ergonomic in-ear design, comfortable and easy to wear. Magnetic charging: With a magnetic charging case, the headset automatically fits close enough to charge immediately. High Definition Calling: Omnidirectional MEMS microphone with call noise reduction technology, effectively isolating ambient noise. Composite Diaphragm Dynamic Coil: With a large composite diaphragm dynamic coil, the bass is rich and mellow, and the listening experience is more delicate. BT 5.0 chip: With high responsive transmission speed, no matter for games, music or calls, it can achieve smooth and stable. IPX5 waterproof: Professional waterproof, no fear of sweat. Charging case: The storage case is also a charging case, not only to protect and store the headphones, but also to charge them. Specifications: Model: S8031 Color: black Material: ABS BT Version: 5.0 Working range: about 10M Battery capacity: 40mah li-ion battery Charging box battery: 300mAH Call time: about 4-5 hours Headphone charging time: about 1 hour BT protocol: A2DP\HSP\AVRCP Package size: 13.5 * 8.5 * 3cm Package weight: 62g Package List: 1 * Pair of Headphones 1 * Charging Box 1 * USB Charging Cable 4 * Replacement Ear Caps 1 * User Manual