1) 4 additional defined keys 2) Built in 1300mAh polymer lithium battery 3) Continuous sending, changing keys, macros 4) 3 sets of onboard configurations can be cyclically switched Connection method+support platform: 1) 3 major platforms: for XBOX/for Switch/for PC 2) Connection method: 2.4G, wired 3) The receiver supports guided extension of for PS4 and supports analog tactile sensation Additional features compared to the standard version: 1) 6-axis gyroscope: supports native body feel of Swtich 2) Cross platform simulation of body feel: Both for XBOX and for PC can support body feel targeting and racing 3) Real time tuning of mobile apps Due to different batches, there may be differences in product appearance and printed text, which will not affect use. Colour:Black Material:ABS Package Contents: 1 x Wireless Back Button kit 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.