Upgrade design 1: upgrade the waterproof function, IP68 waterproof, you can put the bulb completely into the water, you don't have to worry about the product water, extend the service life of the lamp Upgrade design 2: The swimming pool bulb is equipped with solar panels, no need to insert batteries and no need to manually turn off the lamp. The lamp will automatically turn on at night and automatically turn off the light during the day. High quality material: UV protected PC + ABS material, structure The heat-resistant silicone waterproof ring prevents the penetration of water and guarantees a long service life. The thickened ABS exterior features marked corrosion protection and water proofing. These underwater pool lights are amazing night decoration light sources for indoor and outdoor use. Long working hours: Automatic solar charging during the day, only needs to be charged for 6 hours. The lamp can work for 3-5 nights, eliminating the trouble of changing batteries Wide range of uses: they are suitable for wet and dry places such as swimming pool, aquarium, pond, swimming pool, garden, vase, party, decoration of festival, Christmas, Halloween, wedding, vase base, hot tub, pond, home, bathroom, fountain. Tip: Make sure the cap is screwed on correctly and clockwise tightly before placing it in water. Light color: blue light Size: 11.6 x 2.5 cm. Quantity delivered: 2 pieces