This new duck has an internal blinking light and non-replaceable battery that will last up to 40 continuous hours. As the duck is placed into the water it will start blinking multiple colors. Once the duck is taken out of the water the blinking will stop. If a child takes a 20-minute bath every day, it will last 120 days or approximately four months. The rubber duck is made of PVC rubber and is non-toxic. The dimensions are 3 1/2"L x 3 1/2"H x 3"W.