Seac Sub Extreme Custom Bifocal Details

Based on the standard Seac Sub Extreme model, this is a two lens design mask manufactured by one of the world leaders in the diving industry. This very high quality mask is excellent for both diving and snorkelling.

The custom glazed version has prescription lenses bonded to the glass face plate. This means that the optical part does not necessarily cover the entire front lens but does allow for more complex prescriptions to be made.

	•	to correct long or short sight in the top with bifocal correction for near
	•	comes in 2 different colours
	•	same or different powers in each eye
	•	pre-assembled
	•	hard plastic case

Standard Power:	Prescriptions up to +6.00/-10.00 (maximum combined power) and an opposite cyl power 2.00 dioptres. Add +1.00 to +3.00
High Power:	Prescriptions up to +8.00/-16.00 (maximum combined power) and an opposite cyl power 4.00 dioptres. Add +1.00 to +3.00

If your prescription is outside of this range we may still be able to make it. Please contact us to obtain a price and confirm availability.

When you place your order please enter the prescription required in the appropriate box (right then left) and your PD. If no PD is specified they will be made with an optical centration of 64mm.

This item is custom made to order and is usually ready for despatch in 2-3 weeks. If you need by a specific date please contact us to ensure availability.

Not sure if this is the right mask for you? Please read our returns policy.