1000 Meter Remote Control Collar , Electronic Dog Trainer , Electronic Dog Collar , Remote Training Collar , Remote dog Collar: it is new model, if you are interested, please contact us. Receiver: Take off the rubber bottom cover and you will see two batteries (model: AAA / 1.5V). Take out the batteries and install the new ones. Pay attention to the polarity of the batteries. Mount the rubber bottom cover and press it tight.
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