About this item 20W Super-Fast Charging: Sonicgrace focuses on innovation in VR charging technology. The S3 Pro supports 20W fast charging for the Meta Quest 3 and Quest 3S, addressing concerns about battery life and long charging times. (According to our test data, the S3 Pro charges the Quest 3 from 0% to 100% in 2.5 hours, compared to 4 hours with other 12W charging head straps, offering a 37.5% faster charging speed). Magnetic Battery Pack: Enjoy the most convenient charging method with magnetic charging. Simply plug in and charge while gaming, eliminating the clutter of multiple charging cables. The 8000mAh battery pack effectively extends your gaming time. More Better Compatibility: The S3 Pro battery head strap perfectly fits the Quest 3 and the new Quest 3S. We have improved the charging system for better compatibility with the Quest 3/3S, eliminating the noise issue when the battery pack charges the headset. Providing users with a fast, secure, and quiet experience. Durable and Slip-Resistant Knob: S3 Pro vr headset features a stepless adjustment knob for precise fitting. Made from high-toughness, durable material, the knob ensures long-term use without slipping or malfunctioning. Exceptional Comfort and Balance: S3 Pro is made of high-density memory foam that effectively cushions the pressure from the device on your head. The back pad is made of high-toughness soft silicone, fitting various head shapes. The head strap automatically balances the weight of the device front and back, providing optimal comfort and stability during your gaming sessions.