Amazon.com: Retevis Earpiece Adapter,2 Pin to 3.5mm Walkie Talkies Headset Adapter Only Compatible RT21 RT22 RT27 RT7 H-777 H777S RT18 RT19 RT22S (Not Fit for Other Brands) 2 Way Radios (1 Pack) :
Amazon.com: Retevis Earpiece Adapter for Walkie Talkie,2 Pin to 3.5mm Headset Adapter Only Compatible RT22 RT21 RT27 RT7 H-777 H777S RT18 RT19 RT22S(Not Fit for Other Brand) 2 Way Radio (5 Pack) :
Amazon.com: Retevis Earpiece Adapter for Walkie Talkie,2 Pin to 3.5mm Headset Adapter Only Compatible RT22 RT21 RT27 RT7 H-777 H777S RT18 RT19 RT22S(Not Fit for Other Brand) 2 Way Radio (5 Pack) :
Amazon.com: KFD 12V 7A 4 Pin AC DC Adapter for Wacom Cintiq 22HD DTH-2200 Power Supply Synology DS420+ DS423+ DS918+ DS920+ DS923+ DS620slim DS420j DS720+ DS418 DS718+ NAS Server Power Cord SINPRO