Zed by Rockit – Car like Vibrations – Baby Sleep Aid – 6 Vibrating Modes & Soft Glow Night Light – Works on All Mattresses – Baby Soothing Machine – Helps Toddlers Sleep

Requires 2 AA Batteries. With one set of batteries, Zed can run for up to 50 hours. We recommend using high quality alkaline batteries or NiMH rechargeable batteries. It is best to avoid Zinc batteries – make sure your batteries are suitable for "high drain" applications. If the night-light works and but not the vibrations, it's time to change your batteries. Since the light runs on a single LED it requires less power.