What's in the box:

Andoer NP-W126 Dummy Battery Coupler with Spring Cable + NP-F970 F750 Battery Plate Holder Compatible with Fuji Cameras X-A1/X-A2/X-A3/X-E1/X-E2/X-M1/X-Pro/X-T1/X-T2/X-T10/HS33EXR/HS35EXR/HS50EXR (2)

Features:
NP-W126 dummy battery coupler with spring cable, a practical power supply adapter for Fuji cameras.
Compatible with Fuji Cameras X-A1/X-A2/X-A3/X-E1/X-E2/X-M1/X-Pro/X-T1/X-T2/X-T10/HS33EXR/HS35EXR/HS50EXR, etc.
The battery plate is compatible with Sony F550/F570/F750/F770/F960/F970 battery, 7.4V output voltage.
The battery plate can be installed on camera cage or other bracket via 1/4 inch screw or the included cold shoe adapter.
Enables you to use external power source with your camera to achieve long time shooting.

Specifications:
Output: 7.4V
Package Size: 16.5 * 10.5 * 3cm/ 6.5 * 4.1 * 1.2in
Package Weight: 168g/ 5.9oz

Package List:
1 * Dummy Battery
1 * Battery Plate
1 * Cold Shoe Adapter