It's adhered on instrument. Bottle will emit soft and pleasing multicolor light from the mount when car is moving at night. It can give your car a sense of romance, noble and distinctive.
1. Bottle is made of delicate crystal with high transparency. All kinds of design inner carved by laser are very nice, which shows your special taste.
2. It will be light as moving at night automatically. Two minutes later after stop, light's off by itself. No need manual control.
3. It's not light in day or car in stillness.
4. Easy to fix using independent AAA battery.
It's really a very nice auto partner for you!