Tilta WLC-T03-K4  is Tilta WLC-T03-K1 Plus Brushless wireless motor

Main Features:
[FOCUS IRIS ZOOM] via the Right Hand Grips
[PRECISE FOCUS] via Marking Discs, A-B Limits, and Electronic Focus Marking
[NO MDR NEEDED] Wirelessly Control the Motors Up to 1000 Feet
[RUN STOP CAPABLE] via the REC Button on the Hand Grips and Optional Run Stop Cables

Tilta Nucleus-M FIZ Hand Unit

Main Features:
The 3-channel wireless lens control unit
Control focus, iris, and/or zoom
Short-, medium-, and long-range transmission options
15-channel selection minimizes outside interference
Up to 10-hour runtime on a single charge
Ambidextrous design with large wood-edged knob

2X Tilta Nucleus-M FIZ Lens Control Motor
Features
Brushless motor with an integrated motor drive
Cine-lens standard 0.8 Mod, 35-tooth, 32-pitch gear
Motor clamps onto 19mm or 15mm rods (with included bushing)
Power via separately available D-Tap cable or daisy-chain to additional motors
Automatic and manual calibration
For focus, iris, or zoom control
High, medium, and low torque settings
Status display window

Package Including:
Partial Kit IV
1x Wireless FIZ hand unit
2x Brushless wireless motor with 19mm rod support and 15mm rod bushings
1x 55cm 7-pin to 7-pin motor connection cable
1x Photographic Lens Follow Focus Adapter
1x 74cm 7-pin to P-tap motor power cable
1x Follow focus marking disks
1x Wireless FIZ hand unit strap