Product: DJI RoboMaster S1 Part 10 - Vision Marker
Brand: DJI
DJI RoboMaster S1 Part 10 - Vision Marker
A set of Vision Markers consisting of numbers and symbols allow even more possibilities for competition, programming, and learning. The Vision Markers are made of durable paper material and protected by a waterproof matte film. 
Dimension of Single Vision Marker: 17×19.5 cm
In the box: Vision Markers × 14
Note: The S1 supports 44 Vision Markers, which can be downloaded from product page.

Authentic DJI RoboMaster S1 Parts
A set of Vision Markers consisting of numbers and symbols allow even more possibilities for competition, programming, and learning. The Vision Markers are made of durable paper material and protected by a waterproof matte film.
Durable paper material.
Self-supporting.
Includes: Vision Markers × 14

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