The SL03 Spark Lite Mini Camera Flash from Ulanzi fits in your pocket, providing a lightweight, portable on-camera flash and continuous light for your on-the-go photography needs. With a 300mAh USB-C rechargeable battery offering up to 500 full power flashes per charge, the flash features a universally compatible hot shoe mount, allowing it to be used with most major camera brands. It features both a flash and a constant light, which can be used separately or simultaneously to give a fill light and focus assist in low-light situations. The flash has four power levels, from 1/1 to 1/8, with a recycle time of 2.5 seconds at 1/1 and continuous lighting at 1/8. To change between direct light and a bounce light, the flash head can be tilted 90° vertically.
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Key Features
- Compact Shoe-Mounted On-Camera Flash
- Universally Compatible Hot Shoe Mount
- 1/1 to 1/8 Power Output | 6500K CCT
- Continuous to 2.5 sec Recycling Time
The SL03 Spark Lite Mini Camera Flash from Ulanzi fits in your pocket, providing a lightweight, portable on-camera flash and continuous light for your on-the-go photography needs. With a 300mAh USB-C rechargeable battery offering up to 500 full power flashes per charge, the flash features a universally compatible hot shoe mount, allowing it to be used with most major camera brands. It features both a flash and a constant light, which can be used separately or simultaneously to give a fill light and focus assist in low-light situations. The flash has four power levels, from 1/1 to 1/8, with a recycle time of 2.5 seconds at 1/1 and continuous lighting at 1/8. To change between direct light and a bounce light, the flash head can be tilted 90° vertically.
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$24.99
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Ulanzi SL03 Spark Overview
Ulanzi SL03 Spark Specs
Key Specs
| Guide Number | |
| Auto Zoom Head | |
| Bounce/Vertical Adjustment | |
| Swivel/Horizontal Adjustment | |
| Exposure Control | |
| Internal Power | |
| Off-Camera Terminal |
Flash Head
| Guide Number | |
| Auto Zoom Head | |
| Bounce/Vertical Adjustment | |
| Swivel/Horizontal Adjustment | |
| Recycle Time | |
| Secondary Illumination |
Exposure Control
| Exposure Control | |
| Flash Modes | |
| Power Range |
Power
| Internal Power | |
| External Power Pack Compatible |
General
| Mount | |
| Off-Camera Terminal | |
| Mobile App Compatible | |
| Dimensions (W x H x D) | |
| Weight |
Packaging Info
| Package Weight | |
| Box Dimensions (LxWxH) |
Ulanzi SL03 Spark Reviews
See any errors on this page?
does it have optical slave mode?
does it have optical slave mode?
The Ulanzi SL03 Spark Lite Camera Flash (Black) does not have an optical slave mode.
Date published: 2025-11-26
Does it work with the Leica SL 3 camera?
Does it work with the Leica SL 3 camera?
The Ulanzi SL03 Spark Lite Camera Flash (Black) is a manual flash with only a center pin. It is designed to operate solely in manual mode with the Leica SL3 and many other cameras.
Date published: 2025-12-01
May I assume that it works with Leica Q3 as well?
May I assume that it works with Leica Q3 as well?
Yes, the Ulanzi SL03 Spark Lite Camera Flash works with the Leica Q3’s hot shoe in manual flash mode.
Date published: 2026-01-14
will work with Sony RX10 Mark4?
will work with Sony RX10 Mark4?
The Ulanzi SL03 Spark Lite Camera Flash has a universally compatible Hotshoe mount which makes it compatible with most cameras that have a single pin receiver on the Hotshoe including the Sony RX10 IV Digital Camera.
Date published: 2026-04-19