Optoelectronic TTL converter for the Nauticam NA-A7RVI underwater housing and the Sony A7RVI camera. It fits inside the housing and lets you switch between TTL, manual and high-speed sync flash underwater, with the settings driven from the camera’s own menu.
- 🔄 Underwater TTL / M / HSS switching
- 🎛️ Flash settings controlled from the camera menu
- ➕ Flash exposure compensation
- 🕐 Rear and front curtain synchronisation
- 📸 Continuous shooting supported (CL / CH)
- 🚀 Manual-type HSS with compatible strobes, up to 1/8000s
- 💡 2 optical outputs
- 🔗 2 electrical outputs
- 🧵 Fiber-optic cable: 613-core only
- 🔧 Electric sync cord support for Sea&Sea and Ikelite
- 🪫 2 × CR2032 batteries
- 📈 Around 65,000 flashes per set
- 😴 Roughly one year on standby
- ⏻ Automatic power on / off
- 🔦 INON — Z-330, Z-240, S-220, D-200
- 🔦 Sea&Sea — YS-250, YS-D1, YS-D3 Mark II, YS-D3 DUO, YS-D130R
- 🔦 Ikelite — DS-232, DS-230, DS-162, DS-161, DS-160, DS-125
- 🔦 Subtronic — Pro-270
- 🔦 Retra — Pro MAX, Pro II
- 🔦 Marelux — APOLLO-III V2.0, APOLLO-S
UW TECHNICS 11099-HSS TTL Converter for Nauticam NA-A7RVI Housing (Sony A7RVI)
S$640.00
Optoelectronic TTL converter that installs inside the Nauticam NA-A7RVI housing, giving you TTL, manual and high-speed sync flash control underwater for the Sony A7RVI.
Specifications
In-stock orders are usually processed the same working day. If an item isn’t on the shelf, we replenish it — typically within 2–4 days — and send your order out the moment it arrives.
Made-to-order gear, such as certain Nauticam ports and extensions, takes longer — we’ll confirm the lead time with you before you commit.
Need it urgently? Tell us before you place the order and we’ll be honest about what we can commit to.
We don’t sit on orders. If something unforeseen slows yours down — a stock gap, a courier hiccup — we’ll tell you early and do our best to put it right.
We ship within Singapore by courier and worldwide via tracked international services. Import duties and local taxes are the responsibility of the recipient.
Products carry their manufacturer’s warranty (Nauticam, AOI, Kraken and others). If you run into an issue, reach out and we will help you with the claim.
For warranty claims and servicing, submit a repair request — or see how the process works on our equipment repair service page.
If we sent the wrong item or it arrived faulty, contact us and we will make it right.
Full details are on our FAQ page.
















