i-TURTLE SMART 3 – TTL & Manual Trigger for Nikon DSLR and MILC systems
Reliable TTL and manual flash control via fiber optic or sync cord – now in the powerful SMART 3 version.
The i-TURTLE SMART 3 is our latest-generation TTL trigger designed for Nikon DSLR and mirrorless cameras. This is more than a name update – it features all-new hardware, upgraded software, and expanded compatibility with today’s most advanced underwater strobes.
It is the perfect solution for professional underwater photographers who require accurate TTL exposure, smart operation, and broad compatibility with both cameras and strobes.
Compatible Nikon Cameras (TTL / MANUAL mode):
Nikon MILC: Z30, Z50, Z6, Z6-2, Z7, Z7-2, Z9, Z8
Nikon DSLR: D5, D4s, D4, D850, D810, D810A, D800, D750, D600, D500, D300, D300s, D7500, D7200, D7100, D7000, D90
Compatible TTL Strobes (as of 06/2025):
- Ikelite DS160, DS230
- Seaflash 60D, 160D
- Inon Z240 / Z330
- Sea&Sea YS-D2J, YS-D3, YS-D3 DUO
- Retra PRO X MILC
- Retra PRO MAX DSLR/MILC
- AOI Intelli Strobe (SONY settings)
- Backscatter HF-1(SONY settings)
- APOLLO III V2.0, APOLLO S
HSS (High-Speed Sync) available from camera menu
⚠️ We regularly add new supported strobes – before purchasing, please download the PC or Mac configuration software to check compatibility with your system.
Key Features – SMART 3 Version
- User-replaceable battery with 3× the capacity of previous SMART 1–2 models
- USB-C connector for charging and configuration
- Reinforced switches and robust connector for LED or sync cord output
- "SMART" button to check battery status:
- 4 flashes = 100%
- 3 flashes = 75%
- 2 flashes = 50%
- 1 flash = 25%
- TTL & Manual mode switching via the camera menu – even underwater
- First curtain
- Second curtain
- i-TURTLE 3 SMART TTL Trigger for Nikon Cameras by TRT-Electronics
- plus accumulator
- LED panel (flatted window)
- USB-C charging and configuration cable
- Compatible camera models (as of 19.02.2019.): Nikon D5, D4s, D4, D850, D810, D810A, D750, D700,D600, D500, D300, D300s, D7500, D7200, D7100, D7000, D90 with latest firmware (Unified Flash System) DSLR and Nikon Z6, Z7 mirrorless.
- Compatible flashes (as of 19.02.2019.): Ikelite DS160, Inon Z240/Z330, Sea&Sea YS-250, YS-D1, YS-D2,D2-J (optical), YS-110a, Subtronic Pro 160, Pro 27, RetraFlash PRO (HSS mode available in manual mode!).
As new models are added regularly, please download the software and check for compatible camera and flash unit types before purchasing.
