Inon S-220 Compact Strobe

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Brand: Inon
SKU: 4570018120732

Despite of compact body, the S-220 spreads high-power GN22. The full-scale performance coupled with a wide underwater beam angle provides unparalleled performance as a main strobe in all areas, regardless of whether for wide-angle or macro photography or compact digital camera or SLR camera.

S$ 449.54 449.54 SGD S$ 449.54 S$ 575.00

S$ 490.00 S$ 575.00

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Strobes Inon

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Compact yet Powerful GN22 

Despite of compact body, the S-220 spreads high-power GN22. The full-scale performance coupled with a wide underwater beam angle provides unparalleled performance as a main strobe in all areas, regardless of whether for wide-angle or macro photography or compact digital camera or SLR camera.


ModelINON S-220
Strobe Control Mode (*1)S-TTL Auto / Manual
ConnectionOptical D Cable
Guide Number at FULL (*2)22 [without filter]
19 [with Strobe Dome Filter S [SOFT]]
5.6 [with Strobe Dome Filter S [ND]]
Settable power at Manual mode (*2)

*( ) stands for Control Dial position
22(FULL) 19(-0.5) 16(-1) 13(-1.5) 11(-2) 9.5(-2.5)
8.0(-3)  6.7(-3.5) 5.6(-4) 4.8(-4.5) 4.0(-5) 3.5(-5.5)
(1/2EV.increments, 12 steps)
Beam Angle140°(horizontal) × 100°(vertical)[without filter]
150°(horizontal) × 110°(vertical)[with Strobe Dome Filter [SOFT]]
Color Temp.Approx. 5500K [without filter]
Approx. 5400K [with Strobe Dome Filter [SOFT]]
Recycle Time at FULL (*3)Approx. 2.1 seconds minimum ["eneloop" batteries]
Approx. 2.0 seconds minimum ["eneloop pro" batteries]
Approx. 2.5 seconds minimum [Alkaline batteries]
Approx. 3.5 seconds minimum [Lithium (1.5V) batteries]
Flash Capacity at FULL (*3)Approx. 380 flashes ["eneloop" batteries]
Approx. 500 flashes ["eneloop pro" batteries]
Approx. 350 flashes [Alkaline batteries]
Approx. 640 flashes [Lithium (1.5V) batteries]
Compatible BatteriesAA "eneloop" (BK-3MCC) [recommended] x 4
AA "eneloop pro" (BK-3HCD) [recommended] x 4
AA NiMH (*4) x 4
AA Alkaline (*4) x 4
AA Lithium (1.5V) (*4) x 4
DimensionsDiameter: 80mm / 3.1in. Height: 91mm / 3.5in. Depth: 128mm / 5.0in.
(*Including protruded parts)
Weight[air]348g/12.3oz [no battery, no filter]
463g/16.3oz [including 4x “eneloop”batteries]
Weight[underwater]Approx. 50g / 1.7oz (with 4x "eneloop" batteries)
Working Temperature0°C - 30°C / 32°F - 86°F [water temperature]
Storage Temperature0°C - 30°C / 32°F - 86°F [air temperature]
Depth Rating100m / 328ft
Body Material / ColorPolycarbonate/red
Package ContentsStrobe Dome Filter S [SOFT],
Strobe Dome Filter S [ND],
Rubber Cap for Sensor
INON Grease

As of July 2023. Specifications/product design subject to change without prior notice.

Test battery

"eneloop" batteryPanasonic "eneloop", BK-3MCC, 1.2V, Min.1,900mAh
"eneloop pro" batteryPanasonic "eneloop pro", BK-3HCD, 1.2V, Min.2,500mAh
Alkaline batteryPanasonic "EVOLTA NEO", LR6(NJ), 1.5V
Lithium (1.5V) batteryEnergizer ULTIMATE LITHIUM, L91, 1.5V

(*1) Compatible flash mode varies depending on combined camera system.
Please refer the instruction manual for detail.
(*2) Measurement in air/ISO100 at 1m
(*3) Reference test data by INON. Measured with FULL strobe output at 30-second intervals with Advanced Cancel Circuit switch set to “1” in water of 25°C/77°F giving 10 minutes cooling period every 50 flashes.
(*4) Not all Ni-MH batteries are confirmed compatible. To avoid battery issues like battery leak, use good quality batteries that are capable of continuous discharge at high currents referring to (*3),


Nomenclature of S-220

1) Filter Mount (bayonet)
2) Flash Tube
3) Slave Sensor

4) Control Dial
5) Advanced Cancel Circuit Switch
6) Strobe Ready Lamp
7) Main Mode Switch

8) Battery Box
9) Battery Box Inner Lid
10) Battery Box Outer Cap
11) Adapter/Joint Base(M6)

USER MANUAL