[Specification:] Input: 100V-240V 50/60Hz; Output: 16.8V DC, 2A Max. DC Polarity: Inner Positive(+), Outer Negative(-)Connector size: 5.5mm x 2.5mm, additional plug size: 3.5*1.35mm [Scope of Application:] 16.8V 2A charger for massager ; LifePro Life Pro Sonic LPSNCBLU Mini ;Sonic Mini LPSNCMRED Quiet ; LifePro Life Pro Fusion FX FusionFX Heated Percussion Model Name: LPFSNFXBLU LPSNCBLUE;Lot Number: LPD6 ;Model: 3801A Handheld Percussion; Lifepro FusionX Fusion X HeatedLifepro SonicPro Sonic Pro Vibrating Massage Gun Muscle Massager Electric Massager.Note:NOT for 24V Version