B&H Underwater Strobe Chart
Strobes
Slave
Sync Cord Bulkhead
Pre-Flash Compatible 
Guide Number
Power Rating
Coverage Angle
Depth Rating
Flash Modes
Exposure Control
Targeting Light
Recycle Time
Flashes at Full Power
Power Source
Bonica Strobe w/ Auto Exposure
Built-in
No
4 Pre-flash setting, No pre-flash
66 (in feet at ISO 100) 
Not specified
60° 
165' (50m) 
Auto 
Auto only
No
0.3 to 5 Seconds
Approx. 120
4x AA Batteries
Epoque ES-230DS Auto
Built-in
Yes
Auto Pre-flash setting, No pre-flash
3-21 (ISO 100-m)
Not specified
80° X 100°
150' (45m) 
Auto, Manual 
Power dial
No
1.5 to 6 Seconds
Approx. 200
2x AA Batteries
Epoque ES-150DS Alfa
Built-in
Yes
Auto Pre-flash setting, No pre-flash
3-15 (ISO 100-m)
Not specified
80° X 100°
150' (45m)
Manual 
Power dial  
No
1.5 to 6 Seconds
Approx. 250 
2x AA Batteries
Fantasea Line Remora Flash
Built-in
No
3 Pre-flash setting, No pre-flash
20 in air (ISO 100-m)
Not specified
80° horizontal
180' (55m) 
Manual
Power dial
No
Not specified
Approx. 240
2x AA Batteries
Fantasea Cool Flash Nano
Built-in 
No
2 Pre-flash setting, No pre-flash
12 (ISO 100-m)
Not specified 
35mm lens on 35mm film camera
200' (60 m) 
Auto, Manual
Control switch for fine tuning
No
Not specified
Approx. 200
2x AAA Batteries
Ikelite Substrobe DS-200
Optional accessory 
Yes
Auto Pre-flash setting, No pre-flash
76 Surface, 38 Underwater
200 Watt/seconds 
100°
300' (90 m) 
TTL, Manual
Full, 1/2, 1/4, 1/8
Yes Bulb
1.6 Seconds
Approx. 160
NiMH battery pack 
Ikelite Substrobe DS-160
Optional accessory 
Yes
Auto Pre-flash setting, No pre-flash
76 Surface, 38 Underwater
160 Watt/seconds
90°, 100° with diffuser
300' (90 m) 
TTL, Manual
10 manual settings in 1/2 stopsr 
Yes LED
1.5 Seconds
Approx. 225 
NiMH battery pack 
Ikelite Substrobe DS-51
Optional accessory 
Yes
Auto Pre-flash setting, No pre-flash
56 Surface, 28 Underwater 
50 Watt/seconds
70°, 80° with diffuser 
300' (90 m)
Manual
6 manual settings in 1/2 stops
No
3.5 Seconds
Approx. 200 
4x AA Batteries
Ikelite AutoFlash AF35 kit
Built-in
No
Auto Pre-flash setting, No pre-flash
28 Surface, 16 Underwater 
35 Watt/seconds
70°, 80° with diffuser 
300' (90 m)
TTL, Manual
6 manual settings in 1/2 stops
No
2.5 Seconds
Approx. 300 
4x AA Batteries
Intova Slave Strobe
Built-in
No
3 Pre-flash setting, No pre-flash
60/20
Not specified
60°
180' (54m)
Manual
Power output level: 100%, 50%, 25%, 10%
No
7-8 Seconds
Not specified
4x AA Batteries
Olympus UFL-2
Built-in, Requires Fiber Optic Cable
Yes, Olympus Sync Cord
Auto Pre-flash setting, No pre-flash
20 to 36
Not specified
78°
200' (60m)
TTL, Auto, Manual, Remote control
Power Dial
No, but Auto-Focus Illuminator
5 Seconds 
Approx. 200 
2x AA Batteries
Olympus UFL-1
Built-in, Requires Fiber Optic Cable
No
Pre-flash setting, No pre-flash
14 Surface (ISO 100)
Not specified 
70° 
131' (40m) 
TTL, Manual
Full, 1/2 Power
No
3 Seconds
Approx. 200 flashes (alkaline)
2x AA Batteries
Sea & Sea YS-250Pro
Built-in, Requires Fiber Optic Cable
Yes
Auto Pre-flash setting, No pre-flash
32 (ISO 100/m)
Not specified
105° x 105°
200' (60m) 
TTL with Converter, Manual
12 step guide number control Dial
Yes, LED
1.8 Seconds
Approx. 200 
High-Capacity Ni-MH Battery
Sea & Sea YS-110a
Built-in, Requires Fiber Optic Cable
Yes
Auto Pre-flash setting, No pre-flash
22 (ISO 100/m)  
Not specified
105° x 105°
200' (60 m)
TTL with Converter, Manual 
12 step guide number control Dial 
Yes, LED
1.9 Seconds
NiMH Battery: Approx. 330 
4x AA Batteries
Sea & Sea YS-27DX
Built-in, Requires Fiber Optic Cable
No
Auto Pre-flash setting, No pre-flash
20 (ISO 100/m)
Not specified
105° x 84°
200' (60m) 
Manual 
9 step guide number control Dial
No
2 Seconds
Approx. 490
4x AA Batteries
Sea & Sea YS-17
Built-in, Requires Fiber Optic Cable
No
Auto Pre-flash setting, No pre-flash
14 Surface (ISO 100)r
Not specified
70° x 53°
200' (60m) 
TTL, Manual
Full, 1/2 Power
No
3 Seconds
Approx. 400 flashes (alkaline)
2x AA Batteries
Sealife SL961
Built-in
No
4 Pre-flash setting, No pre-flash
20- 8 ISO 100
Not specified
60° 
200' (60m) 
Auto, manual 
Power dial
No
7 Seconds
Approx. 100
4x AA Batteries