Amazon.com: Onerbl USB Plug end AC/DC Adapter Compatible with Swiss Technology Compex SP 8.0 SP8.0 SP 6.0 SP6.0 Intensive Wireless Stimulator Class 2 Power Unit Switching Power Supply Cord Battery Charger PSU :
Compex Wireless | How To Use Your Electro-Stimulator - YouTube
Compex Wireless SP 6.0 | Best price at Gym Equipment Superstore