Specifications:<br />Case material: ABS electrochromism<br />LED emitting color: Multicolor change automatically<br />External thread diameter: 2.4cm<br />Item size: 3.5 * 2.8cm / 1.4 * 1.1in(length * diameter)<br />Item weight: 20g / 0.7oz<br />Package size: 11 * 7 * 3cm / 4.3 * 2.8 * 1.2in<br />Package weight: 30g / 1.1oz