Specifications:
Condition: Brand New
Built In Battery: Lithium Battery 
Size: Approx. 12 x 2.3cm
USB direct charging
Package Included:
1x Red Light 

Note:
 1.Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid.
 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.
 Thank you!
3. Due to batch variations, the black portion at the top of your product may appear silver-gray, which does not affect its use. Please consider this before purchasing.