Amazon.co.uk Price: £29.88 (as of 17/08/2022 02:18 PST- Details)

Pain Away is a registered Class IIa medical device that provides instant drug-free pain-relief via Transcutaneous Electrical Nerve Stimulation (TENS)
Stimulates the release of endorphins, your body’s own natural painkillers and repeated treatments act cumulatively
Highly portable, requires no batteries or electrical connection and can also be used for non-invasive acupuncture (diagrams included in the instruction booklet)

Usually dispatched within 24 hours