Features: No WiFi connection required, files can be instantly migrated to external storage card, easily expanding storage capacity. Connect directly to your phones, quickly edit source materials, and greatly improve the smoothness and experience of app editing. Supports direct charging of a single camera through a power interfaces or mobile power, without relying on expansion box. To save photoshoots power, recommended to use power/mobile power when migrating files. If you need to use it for GO 3, please upgraded the firmware version to version 1.3.11. Specifications: Material: ABS Color: White Size: about 59x28x14mm/2.32x1.1x0.55inch Applicable Model: for 360 GO 3/GO 3S Thumb Cameras Package Includes: 1pc Quick Transmission Adapter note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.