TIREMINDER WIRELESS TIRE PRESSURE MONITORING SYSTEM TM22168 BOAT TRAILER. This is new and in the original packaging, only opened for photos. This box includes: (1) TireMinder TM-77 Monitor, (6) TireMinder Flow Through Transmitters, (1) Signal booster, (1) Micro USB Cable and DC Adapter, (12) CR1632 Batteries, (6) O-Rings, (6) Locking Nuts, (1) Locking Wrench with Valve Core Tool, (1) Mounting Bracket, (1) “Carry-All” pouch and (1) TireMinder TM-77 Manual. For more information regarding this item contact a dealer in your area.