Article name: TENS & EMS STIMULATOR 1 Electrical stimulation of nerve tracts ( TENS) 2 Electrical stimulation of muscle tissue( EMS) 3 A massage effect generated by electrical signals 4 Sports ( A function generated by the combination of TENS and EMS) Article Features: " Massage: improve physical comfort & well being Tens: simple pain relief Sports: tens+ ems co-functional Ems: beauty/ shaping/ fitness/ muscle training/ regeneration " Accessories " 1> Electrical stimulator device 1 pc" " 2> Electrodes Leads 2 pcs" 3> 50( mm) â x 50( mm) â Adhesive Electrodes 4 pcs " 4> 1.5V* 4( AAA) Ordinary Battery 4 pcs" " 5> Instruction Manual 1 pc" 6> 1.2V AAA 800mAh Rechargeable Batteries Optional Accessory 4 pcs 7> Charger( Input: AC 100~ 240V 50/ 60Hz Output: DC2.82V N 800Ma max Charging current 200^ 500Ma) Optional Accessory 1 pc Certificates available: CE, FDA