Automatic Baby Cradle, design for most type of baby cradle (stand/frame) Safe & easy to operate Provides a good night sleeps to baby Can adjust the speed of the movement (Slow & Quiet model) Timer setting (0-180min) Easy to Assemble in Minutes For Max Load ~16kg Japan Branded Motor Recommended Springs quantity versus the baby's weight: 2pcs - 3-4kg 3pcs - 4-6kg 4pcs - 6-8kg 5pcs - 8-10kg 6pcs - 10-12kg 7pcs - 12-16kg