Get the firm, sexy arms you've always wanted with the Slendertone System - Arms Triceps Toner with Controller. This system uses electrical muscle stimulation (EMS) technology to generate signals that are sent via the garments and pads to stimulate the muscles, causing them to contract. System includes a rechargeable unit controller, which can be used with other Slendertone products. Slendertone System - Arms Triceps Toner with Controller Includes: 2 Slendertone arms toning garments 4 elastic straps 4 adhesive gelpads Drawstring storage pouch Rechargeable unit controller Battery charger Instruction manual Quick Start guide Adhesive pad instruction sheet Product Features: FDA cleared for use toning the triceps Design ensures that all of the muscles contract and not only those directly under the pads; this technology has been used in hospitals and by physical therapists for over 50 years Use the included controller to increase or decrease the intensity of muscle stimulator or to select from 3 preloaded programs Features beginner, intermediate and advanced level programs. For best results, it is recommended that you do 3 - 5 training sessions per week Ergonomic design - fits arms measuring 8-1/2" to 14-1/2." in diameter. Slendertone straps on to the arms to secure contacts in place. Adhesive GelPads make direct contact with the skin so signals can be sent to your muscles so you can tone both arms at once GelPads should last approximately 20 sessions - to prolong their life, smear a few drops of water on the back and wipe skin clean of any lotions, etc., before use Comes with 3 rechargeable batteries installed Arm toning garments measure approx. 8.7"L x 3.5"W x 0.5"H Made of plastic, polyester, foam and nylon Hand wash, air dry UL listed Made in China Comes with a manufacturer's 1-year limited warranty Note: Please consult your physician before beginning this or any exercise or diet program Warnings: Should not be used while sleeping Persons with pacemakers or other implants, who have cancer or cognitive dysfunction, or have epilepsy, who have had recent surgery or injury, are under medical care or who are pregnant should not use the product unless they have cleared it with their doctor first The long-term effects of chronic electronic stimulation are unknown