Electronic Pulse Massager JR-309A. Multi-functional Digital Electrical TENS Acupuncture Therapy Massager, Slimming Body Stimulator Machine (JR-309A). Item Type: Massage & Relaxation. Brand Name: Therapy Massager. Material: Plastic. Application: Body. Size: Electric Stimulator. Model Number: JR309A. Function: Fat burning. Accessory: Body massager. Unit Type: Piece. Shoes Size: One size. TENS Acupuncture Full Body Pulse Relax Muscle Therapy Massager. Digital display for treatment guide. Uses infrared physical therapy electrodes. Improves body circulation, relieves pain, and promotes metabolism.