The Virtual Reality system HTC Vive consists of two controllers (see figure HTC Vive Controller) which are used for control and movement in the VR space.
Figure 7: HTC Vive Controller (Source: https://www.logando.de/wp-content/uploads/2017/04/VR-Brille-HTC-Vive-mieten_Handbuch-Deutsch.pdf, Page 39)
The controller of the Pico Neo 3 have the following structure (see figure Pico Neo 3 Controller):
Figure 8: Pico Neo controller (Source: https://zh-cn.manuals.plus/ezoimgfmt/manuals.plus/wp-content/uploads/2022/01/Pico-C1710-VR-Motion-Controller-300x252.png?ezimgfmt=ng:webp/ngcb1)