Kids can wander away from you in no time! Give yourself some peace of mind with our toddler tracker. Just clip the receiver to the back of your child's shirt where it is out of reach. If you loose sight of your child, press the button on the parent transmitter. The receiver sounds a high-decibel ÒbeepÓ and the eyes flash until you find your child. Works up to 100 feet indoors and over 100 feet outdoors. Great for malls, playgrounds, the beach and airport. Includes 3V coin cell battery for each unit. Transmitter measures 2 7/8"L x 1 1/4"W and attaches to your key ring for easy access. Receiver measures 3 1/8"L x 2"W. For children ages 18 months to 6 years. Select Pink (P), Red (R) or Yellow (Y).