Hollyland Wireless Tally System with 4 Tally Lights bestseller-recent It has a 1/4"-20 screw

It has a 1/4"-20 screw on the top to attach accessories and is locked with a knob

including AF (requires external 5V power via micro-USB port)

foldable design

Leica DG 100-400mm f/4-6

Magnesium alloy chassis assures rigidity

Hollyland Wireless Tally System with 4 Tally Lights bestseller-recent It has a 1/4"-20 screwThe Hollyland Wireless Tally System with 4 Tally Lights is a portable, complete tally solution that includes four tally lights that can be connected up to 790m away from the wireless host unit. Equipped with multiple ports that provide DB25, RJ45, and USB C connectivity for compatibility with a wide range of switchers, the system boasts a powerful smart sequence learning function, adaptive frequency hopping, and support for up to 16 channels for