1. Based on the original M2 strap, through the flexible support design, the fixing method of the back of the head is optimized and the expansion interface is provided. Improve a more comfortable wearing experience 2. To accommodate different head sizes, it offers up to 6 different adjustment points, each individual can be adjusted until you feel most comfortable 3. Balance and reduce facial pressure for comfort. The distributed gravity balance design is adopted so that the gravity of the product is evenly distributed in different positions of the head, which greatly reduces the pressure on the face 4. The strap comes with an extra set of honeycomb silicone pads that you can replace. Honeycomb pads are directly interchangeable with original PU leather pads. Both pads have their own characteristics. You can choose the most suitable headrest depending on different usage scenarios 5. With a battery expansion port, it is convenient for users to use for BOBOVR's new battery docking accessories to upgrade to the battery strap version and to achieve unlimited power supply by alternating use of two B2 battery packs to avoid unnecessary waste (B2 battery pack and battery base are not included, they must be purchased separately) 6. Product net weight: about 277g 7. Package includes: 1 x Head strap 1 x PU Leather pad 1 x Honeycomb pad 1 x English User Manual