25x Long Eye Relief Kowa Eyepc For 82SV KOWA TE-17HD 25X LER EYEPIECE FOR 82SV SCOPE Unfortunately, the only Kowa spotting scope eyepiece that cannot be used in conjunction with the new iPhone adapter is our TE-17HD long eye relief eyepiece for the TSN-66/60/82SV series of spotting scopes. Magnification:25x Exit Pupil (TSN-770):3.1 mm Exit Pupil (TSN-880):3.5 mm Eye Relief:32.0 mm Lens Coating:Fully Multicoated Waterproof:Yes Angle of View:2.3 DEGREES Fogproof:Yes Field of View:120 ft at 1000 yards If customer has 824 scope and wants an eyepiece, he can purchase a TSN-EC3 converter ring that will allow use of the 82SV or 600 series eyepieces. Exit Pupil Eye Relief FOV @ 100M Magnification Real FOV Relative Brightness Twilight Factor 2.4mm (TSN 600) 2.6mm (TSN 660) 3.0mm (TSN 82SV) 32mm 36.7M (TSN 600/660) 35M (TSN 82SV) 25x (TSN 600/660) 27x (TSN 82SV) 2.1 degrees (TSN 600/660) 2.0 degrees (TSN 82SV) 5.8 (TSN 600) 6.8 (TSN 660) 9.0 (TSN 82SV) 38.7 (TSN 600) 40.6 (TSN 660) 47.1 (TSN 82SV)