Item No.: SL-W022C
9 super bright white SMD LED in the middle. 
Brightness: 120 Lumens. 
LED using life: 100,000 hours. 
Material: Aluminium. 
Using 3×AAA batteries not included.  
Product Size: 163(L)×16(W)×30(H)mm.      
Switch on the top & Strong magnet in the pen clip.
Small and exquisite & convenient to carry.