Features: The luminous necklace is composed of stainless steel chain and alloy pendant, which is comfortable to wear. Use sunlight, lights, phone flashlight or flash light for about 30 seconds, and it will glow in the dark. They will be very good clothing accessories, which can easily matchs with clothes in different occasions. Glow pendant necklace is the best gift for family, friend, brothers and colleagues. The whale necklace is very suitable for hip-hop, rapper, band, party, bar, dating, studio photos and video shooting. Specifications: Material: Alloy Pendant+stainless Steel Chain Main Stone Color: Blue Light/Green Light/Blue-Green Light Size: As Shown in the Picture Package Includes: 1x Necklace note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.