Sony 2x Teleconverter Lens - Sony E-Mount Brand_Sunprint Hypo Eliminator contains ammonia which

Hypo Eliminator contains ammonia which complexes with the silver ions in the Residual Hypo Test Solution decreasing their effective concentration

2 shutter settings (daylight & "B")

No camera-club jargon

It may have no monitor

the lens provides sharp

Sony 2x Teleconverter Lens - Sony E-Mount Brand_Sunprint Hypo Eliminator contains ammonia whichThe Sony 2x Teleconverter Lens multiplies the focal length of the lens used by 2x without degrading optical performance, AF speed and precision, or operability. Light loss with the teleconverter is approximately 2 stops. An ideal way to extend available focal length range for sports or wildlife photography without having to carry additional large, heavy lenses. The SEL20TC teleconverter is currently compatible with the SEL70200GM lens only.