X Rocker Universal Wireless Retrofit System - Turns Any Audio Chair into a Wireless System, includes Transmitter + Receiver, Ace Bayou - Blue, Red, Gray, 51279 : Amazon.sg: Baby Products
X-ROCKER GAMING CHAIR Wireless Audio Transmitter Model 51Xxx £19.99 - PicClick UK
3V AC Adapter For X-Rocker Transmitter 51XXX Wireless Connection Device XRocker | eBay