Attach the color-coded receivers to your frequently lost items with the key rings or double sided adhesive tape.With just one press on the color-coded button, the beep sound and flashes will lead you to find the lost items. You can find the lost items quickly by pressing the color-coded button, the beep sound and flashes will lead you to find the lost items. Stick the receivers on your valuables or string the receivers on the included key ring. Got a friend who keeps losing key? Give this key finder as a gift. Remote:Follow the steps below to install batteries into the remote. (1)Remove the battery cover located on the back of the remote; (2)Install the batteries according to the (+) and (-) marks inside the battery compartment; (3)Close the battery cover. Receiver: (1)Open the outer shell with the opening tool provided; (2)Replace CR2032 battery. Colour:Black Material:ABS The color and appearance of some accessories are sent randomly,can not be chosen the specific , which will not affect the use Package Contents: 1x Transmitter 6x Receiver 1x Mounting Accessories set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.