Wahl Massager, Hot-Cold Therapy, Hand Held & Corded, Low & High Vibrations Up To 3,600 Pulses Per Minute 4295-400 This handheld massager uses hot and cold therapy to help increase blood circulation, relieve muscle pain and joint swelling. The ergonomic design lets you get to easy and hard-to-reach places like your mid and lower back. Regular massages can help you feel more relaxed, comfortable and closer to pain-free. 60 Days Warranty