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SmallRig RS20 Mini Speedlite Flash (Black and Red)

BH #SM5374 • MFR #5374
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SmallRig RS20 Mini Speedlite Flash (Black and Red)
Key Features
  • Compact Shoe-Mounted On-Camera Flash
  • Universally Compatible Hot Shoe Mount
  • 1/1 to 1/128 Power Output | 6500K CCT
  • 0.1 to 1.8 sec Recycling Time
With its compact form factor and weight of just 3.5 oz, this RS20 Mini Speedlite Flash from SmallRig is a convenient flash-lighting solution for on-the-go photographers. The RS20 is capable of shooting up to 500 consecutive full-power flashes and charges its 2000mAh internal battery via its USB-C port. The Mini Speedlite offers variable power output from 1/1 to 1/128. Mounting via its universally compatible, single-contact hot shoe mount, the RS20 features a rapid recycling time of 0.1 to 1.8 seconds and sports manual control buttons and an OLED screen for easy monitoring.
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SmallRig RS20 Overview

With its compact form factor and weight of just 3.5 oz, this RS20 Mini Speedlite Flash from SmallRig is a convenient flash-lighting solution for on-the-go photographers. The RS20 is capable of shooting up to 500 consecutive full-power flashes and charges its 2000mAh internal battery via its USB-C port. The Mini Speedlite offers variable power output from 1/1 to 1/128. Mounting via its universally compatible, single-contact hot shoe mount, the RS20 features a rapid recycling time of 0.1 to 1.8 seconds and sports manual control buttons and an OLED screen for easy monitoring.

Additional Details
  • Compatible with cameras featuring a large center ISO contact on their hot shoe
  • Offers 8 stops and 22 levels of light adjustment (1/1 to 1/128) for diverse shooting scenarios
  • Maximum supported shutter speed of 1/250
  • Compact 2.9 x 2.8 x 1.8" form factor and lightweight 3.5 oz design
  • Multiple modes, including master/slave trigger mode
  • Guide number of 39.4'

SmallRig RS20 Specs

Key Specs
Guide Number
39.4' / 12 m
Auto Zoom Head
No
Bounce/Vertical Adjustment
No
Swivel/Horizontal Adjustment
No
Exposure Control
Manual
Wireless Operation
No
Internal Power
1x Rechargeable Lithium-Ion (Built-In)
Off-Camera Terminal
No
Flash Head
Guide Number
39.4' / 12 m
Auto Zoom Head
No
Bounce/Vertical Adjustment
No
Swivel/Horizontal Adjustment
No
Recycle Time
Approx. 0.1 to 1.8 Seconds
Secondary Illumination
No
Exposure Control
Exposure Control
Manual
Flash Modes
No
Power Range
1/1 to 1/128 (Manual)
Flash Compensation
No
Wireless
Wireless Operation
No
Wireless Channels
No
Wireless Groups
No
Remote Timing Modes
No
Power
Internal Power
1x Rechargeable Lithium-Ion (Built-In)
External Power Pack Compatible
Yes
General
Mount
Shoe
Off-Camera Terminal
No
Mobile App Compatible
No
Dimensions (W x H x D)
2.9 x 2.8 x 1.8" / 7.3 x 7.1 x 4.6 cm
Weight
3.5 oz / 100 g
Packaging Info
Package Weight
0.505 lb
Box Dimensions (LxWxH)
4.9 x 4.6 x 2.5"

SmallRig RS20 Reviews

See any errors on this page?

Will this work with Nikon Z cameras?

Will this work with Nikon Z cameras?
Asked by: Vincent
The SmallRig RS20 Mini Speedlite Flash is a manual flash; it will fire in manual mode on any camera that has a center pin hot shoe.
Answered by: Davis H
Date published: 2025-08-11

Does a Nikon Z camera have a center pin hot shoe?

Does a Nikon Z camera have a center pin hot shoe?
Asked by: barry
The SmallRig RS20 Mini Speedlite Flash (Black and Red) has only a center pin.
Answered by: Rob K
Date published: 2026-07-26

Manual only or (E)TTL?

Manual only or (E)TTL?
Asked by: Luc
The SmallRig RS20 Mini Speedlite Flash is a manual-only flash; it does not have any TTL capabilities for any camera model.
Answered by: Davis H
Date published: 2025-07-31

How many watts is it?

How many watts is it?
Asked by: Nick
The SmallRig RS20 Mini Speedlite Flash (Black and Red) is a speedlite. Most speedlights are not rated in watts. It is rated in a guide number. It has a guide number of 39.4' / 12 m.
Answered by: Rob K
Date published: 2026-07-28

Does it tilt or bounce?

Does it tilt or bounce?
Asked by: Howard
The SmallRig RS20 Mini Speedlite Flash (Black and Red) does not tilt or bounce.
Answered by: Rob K
Date published: 2026-07-26

Is this compatible with Canon R10?

Is this compatible with Canon R10?
Asked by: Ron
As the SmallRig RS20 Mini Speedlite Flash is a fully manual flash that only uses the main center hot pin on a standard ISO hot shoe, and the Canon EOS R10 Mirrorless Camera has a Multi-Function hot shoe that retains the center hot pin, yes, the SmallRig RS20 Mini Speedlite Flash may be used manually on the Canon EOS R10 Mirrorless Camera.
Answered by: Manzell L
Date published: 2025-07-28

Is this compatible with a Sony A9iii?

Is this compatible with a Sony A9iii?
Asked by: Gary
The SmallRig RS20 Mini Speedlite Flash (Black and Red) (B&H# SM5374) may be used with the Sony a9 III Mirrorless Camera (B&H# SOA93) albeit with the flash sync timing unlikely to be reliable at faster shutter speeds.
Answered by: Yoni S
Date published: 2026-07-27

Is this compatible with the Canon R6 Mk II?

Is this compatible with the Canon R6 Mk II?
Asked by: Thom
The SmallRig RS20 Mini Speedlite Flash will work as a manual flash with any camera system featuring a center contact hot shoe, but there will be no TTL connectivity.
Answered by: Davis H
Date published: 2025-07-31
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