AOI UWL-03PROII  is underwater 0.73X wide-angle conversion lenses designed for action cameras and smartphones, both delivering a 140° underwater field of view to capture expansive seascapes and close subjects.​
 
Product Highlights
Feature identical 4-element/4-group optics with multi-layer AR coatings and QRS-02 quick-release mounts (QR2/AD compatible, with optional M55/M52/M46 adapters). PROII offers pro-grade upgrades for deep diving.
 
Lens Construction: 4 Elements in 4 Groups
Lens Coating:
All Glass Elements with Multi-layers AR Coating
Optical Grade Glass Dome Lens with Inner Surface Multi-layers AR Coating
Field of View:
140° (underwater)
150° (on land)
Mouting System:
Using AOI Quick Release System- 02 (QRS-02)
Lens pre-installed with QR2 Mount (compatible with the most popular AD Mount)
Optional Mounting Adapter in M55, M52 & M46 available
Depth Rating: 100 Meters / 328 Ft.
Lens Barrel/ Dome Lens/ Lens Hood Material:
Aluminum Alloy with Black Hard Anodized / Glass Lens / Polycarbonate
Weight:
400 g (on land)
200 g (underwater)
Dimensions: 99mm (D) X40.3mm (H)
Accessories: 
Dome Lens Hard Cover (AOI DHC-02)
Rear Lens Cap (AOI QRS-02-RC1)
Lens Secure Line
Lens Pouch