A compact, lightweight and power-saving tracer unit Automatic shut-off when idled for 40 minutes or the battery power is very low Power indicator is only easily visible to the user and cannot be seen by targets Automatic shut-off when idled for 40 minutes or the battery power is very low Rechargeable Li-Poly battery enables user to charge unit by micro-USB charging cable Includes a 14mm adapter for universal fitment with most Airsoft barrelsSpecifications: Brand AceTech Build Aluminum Frame / Metal Adapter Compatibility 14mm CCW barrels Color Black 1X Tracer Unit