AOI Q1i Ultra Compact Strobe

The AOI UCS-Q1i-BLK is a high-performance ultra-compact underwater strobe designed for photographers who demand powerful lighting in a portable form factor. Built with a durable polycarbonate and glass fiber body, it delivers reliable performance at depths of up to 60 meters, making it suitable for a wide range of underwater photography applications—from macro to wide-angle.

With a guide number of 22 and a fast 0.85-second recycle time, the UCS-Q1i ensures consistent and responsive lighting. Its advanced flash modes, including TTL, i-Macro, and manual control, provide flexibility across different camera systems, while fiber optic synchronization enables seamless integration with underwater housings.

In addition to strobe functionality, the integrated LED light offers up to 700 lumens output, making it useful as a focus or modeling light. Compact, versatile, and powerful, the UCS-Q1i-BLK is an ideal lighting solution for both enthusiasts and advanced underwater shooters.
 

Key Features

• Ultra-compact and lightweight design for easy handling underwater
• Depth rated to 60 meters for reliable use in demanding dive conditions
• Guide Number 22 output for strong and consistent illumination
• Fast recycle time (0.85 seconds) at full power for rapid shooting
• Wide beam angle (85° with diffuser) for even light distribution
• Advanced flash modes including TTL mode and i-Macro mode
• Manual power control (6 steps) from 1/64 to full output
• Fiber optic flash synchronization for compatibility with underwater camera systems
• Pre-flash auto learning and cancellation for accurate exposure
• Integrated LED light (700 lumens) with adjustable power levels
• Modeling flash function (2 seconds) for previewing lighting
• 1” ball mount compatibility for standard underwater rig setups
   

Specifications

• Body Color: Black
• Material: Polycarbonate + Glass Fiber
• Depth Rating: 60 meters
• Strobe Performance
  • Guide Number: 22
  • Color Temperature: 5600K (5000K with diffuser)
  • Beam Angle: 85° (horizontal and vertical with diffuser)
  • Flash Recharge Time: 0.85 sec (full power)
  • Number of Flashes: Approx. 1,500 (full power, with 3100mAh batteries)
  • Flash Sync: Fiber optic cable (multi-core recommended)
  • Pre-flash Sync: Auto learning / cancellation
• Flash Modes
  • TTL Mode
  • i-Macro Mode
  • OM System RC Flash (Group A, Channel 1): TTL Auto, Manual, FP TTL Auto, FP Manual
  • Sony: TTL, HSS TTL
• Manual Mode
  • Output Levels: 1/64, 1/32+0.5, 1/8, 1/4, 1/2, Full
• Additional Functions
  • Modeling Flash: 2-second flashing duration
  • Flash Test Button: Yes
• LED Light
  • Max Output: 700 lumens
  • Power Settings: 25%, 50%, 100%, Off
  • Color Temperature: 5600K
  • Beam Angle: 45°
  • Burn Time: Approx. 130 minutes (full power, LED only, with 3100mAh batteries)
• Battery
  • Type: 2 × 18650 Li-ion rechargeable batteries (not included)
  • Minimum Output Current: 5A
  • Minimum Length: 69 mm
• Mounting
  • 1-inch ball mount (non-replaceable)
• Dimensions & Weight
  • Dimensions: 125 × 77 × 131 mm
  • Weight (on land): approx. 550g (with batteries)
  • Weight (underwater): approx. 90g (with batteries)
     

In the Box

• Strobe Diffuser for Q1 Series (SD-01)
• Control Knob Extension (CKE-01)
• Spare O-ring Set (SOR-01)
• O-ring Remover (ORR-02)
• Silicone Grease (1.5g)
• Battery Storage Case (BSC-18650-2), batteries not included