Sleep Trainer This Children’s sleep trainer uses 7 colors and 3 emoticons with distinct colors to teach your kids when it's time to wake up, play, or sleep. When it turns yellow it's time to wake up, and when it is smile and glows green, it...

Features: 1.World First 5 pressing keys to practice finger-interval. 2.Precise design for spring structure with copper nut and screw, and the product has a lifetime warranty. 3.Visable physical force adjustment, you can see the change while you...