Smyth sell 100's of these excellent  BARSKA Binoculars ,Midi size 10 X 50  X Trail AB10176 every year !  Being rugged and lightweight is one thing but the bright, crystal clear image is really first class. These BINOS are top, top quality  Reverse Porro  Prism with handy strap & carrying case. Lightweight and really high powered ideal for birdwatching and hiking, fishing. Precision Binoculars with a strap and case 

magnification... 10 times

objective lens 50 mm

Field of view 324 feet @ 1,000yards

Close Focus  33 feet

Prism Glass  BK-7

Exit Pupil..5 mm