Specifications Product Model:Lenovo Erazer X9 Bluetooth version：Bluetooth V5.4 Charging port: Type-C Operation mode: touch control Bluetooth effective distance：Approx.10m Battery capacity:600mAh Battery life: 12h Battery life withcharging case:84H Bluetooth version: V5.4 Charging time: 1.5 Hours Enjoy listening Time: 6 hours 【20mm large sound cavitySpatial sound effect &gold-standard sound quality】 20mm driver unit, HlFl Dolby-level sound quality, new digital enhancement technology to create a more realistic restoration of the panoramic three-dimensional spatial sense. 【No swelling or pain afterlong-term wearing】 Specially designed for sports ergonomics, single earphone-64© fits the ear canal better, doas not shift during exercise, and is comfortable to wear all dhy. 【AURA vocal enhancement Comfortable listening experience,smart and natural】 Pure vocal enhancement algorithm enhances the mid-high frequency performance and highlights the vocals, bringing a clear and pure music atmosphere. 【Dual-effect directional soundtransmission reduces soundleakage by 93%】 The seventhgeneration DT pulse directional sound transmission,with 25% fine-tuned sound transmission angle, accurately focuses sound waves into the ear, without sound leakage, and provides more peace of mind. 【High-definition calls,every sentence is clear】 The high-sensitivity microphone and ENC call noise reduction algorithm filter out wind noise and make communication smooth, just like a face-to-face conversation. 【5.4 Bluetooth chip,no sense of delay】 Innovative 5.4 Bluetooth flash connection technology realizes lossless data transmission without disconnection, and pairs in secends after taking it out. Products Include 1 * A pair of OWS Headphones 1 *Charging box 1 *Charging cable 1 *User Manual