Good to know  - This Beurer self-adhesive TENS pad relieves menstrual cramps and period pain without the need for medication- Switch to the optional warming function to relax your muscles and make you feel at ease - Choose from the 15 intensity levels and find the perfect spot for easing your pain - It automatically switches off after 20 minutes to save battery- Ran out of charge? Simply plug it up with the USB cable- It's flexible and discreet - wear it under your clothes when you're out and about