NOTE: These are REPLACEMENT remotes for the ActionHeat 3V Insoles and the ActionHeat 3V Sock 2.0.Re-pairing 3.7V Batteries to remote Connect the fully charged 3.7V batteries to a 3.7v heated item Press & hold the power button on the battery for 7-10 seconds, or until the LED lights on the battery blink red. Press the power button on the remote for 1-2 seconds, or until the LED lights on the battery turn off. You should now be paired! The frequency is the same for both the insoles and socks, so your remote may work for both items.Includes:(1) ActionHeat Replacement Remote For 3V Footwear