This prism features a red LED light, which pulses every two seconds. It’s perfect for low-light or nighttime work conditions.

All of the electronics—including the Sanyo CR-1/3N camera battery—are built in to the canister. The battery is designed for approximately 48 hours of use and is easy to replace.

The sealed canister features a standard M20 thread and can be used with most SECO and other brand targets and holders.

Source: SECO, Oct. 3, 2003