ghost necklace

Some ghost necklaces are glow-in-the-dark — they charge from sunlight or UV/black light (one listing notes purple-light activation). Other designs are battery-powered light-up charms that use installed CR1220 button cells.

Pendant sizes vary but are generally small. Examples from listings include about 1.5 cm × 2 cm (0.59 × 0.79 in), 1.1 inches, roughly 4.5 × 2 cm (1.8 × 0.8 in), and 1.8 × 1.8 cm (0.7 × 0.7 in).

Closures vary by listing and include lobster-claw clasps, simple spring-style clasps, and some buckle-style closures depending on the design.

Both. Many listings sell single necklaces, while others are offered in small sets — common set sizes shown include 2, 4, and 6 pieces.

Light-up necklaces in the listings use CR1220 button cells (two cells). At least one listing specifies the 2 × CR1220 (3V) batteries are preinstalled and non-replaceable.