Features:

Carbon fiber tail blades.
Uses LED type lights.
Lights turned on with centrifugal force.
Powered by easily replaceable lithium cell button batteries
Specifications:

Length: 105mm
Width: 30mm
Root: 5mm
Weight: 6.9g
Bolt hole: 3mm

Includes:

One pair of luminous tail blades.
Two CR-1225 3V lithium cell button batteries preinstalled into blades.
Two spare CR-1225 lithium button cell batteries.
Four 3x10x1.5mm tail blade spacers.
Two fish lines (battery removal tool).
One instruction manual.