Works great. May need a battery replacement soon.

From the manufacturer:

Attention-grabbing LEDs light up these drinking bottles, so every time you take a drink you look as good as you feel! This 22 oz. bottle features a finger pull sipper spout for easy access drinking and keeping sipper germ free . A soft grip, stow-able handle is great for carrying! The BPA-free, durable plastic material ensures the bottles are tough enough for any challenge. POP Lights Hydration Bottles are the coolest way to stay hydrated. A 60-second auto shutoff timer helps keep the coin cell batteries (included) fresh. POP Lights by Coolgear—The Future is Bright!