Model Number: JRD01 Brand Name: Petzu Key Specifications/Special Features: Realistic sounding heartbeat and warmth helps puppies to relax and sleep naturallyEffectively stops nuisance barking during housebreakingEasy to use - Just microwave heating simulator for 60 secondsEasy to operate on switch, with auto shut offMachine washable for repeated useMother's comfort heartbeat pillow combines the comforting sound of a mother's heartbeat and body warmth to help soothe your puppies to sleep naturally.Pillow is machine washable for repeated use, with removable heartbeat simulator and heart warmth simulator.Mother's comfort heartbeat pillow includes a fleece pillow top, two AAA batteries, a microwavable mother's warmth simulator and a bonus housebreaking guideThis convenient pillow will help your puppy fall asleep faster and greatly reduces stress for an overall happier, healthier puppy.