1. This expansion frame supports all available and aftermarket lens protectors without affecting simultaneous use. 2. Once installed, the product requires no frequent removal, and the battery and USB ports are hollowed out for worry-free use. 3. The bottom is hollowed out and connected, ensuring strength while maintaining compatibility with magnetic adapters and tripod mounts. 1/4inch screw holes are also available. 4. The top microphone and side speaker have holes for smooth playback and reception. 5. A cold shoe mount is added to the top, and 1/4inch screw holes are added to the sides for expansion, allowing for more accessories and convenient use. The overall weight is ultra-light at only 17.5g, ensuring no additional weight. The screw connection ensures a secure fit and resists falling off. Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Color: Black Material: ABS Package Contents: 1 * Protective Frame Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.