The Ritter J Chair has two styles of head rests:
SV1 - head rest with arms
SV2 - head reast with arms
Color OAK US-421
Color Bisk US-409
How to tell the difference between the SV1 & the SV2?
The SV1 screws on the back of the head rest are Horizontal (side by side)
The SC2 screws on the back of the head rest are vertical (top to bottom)
RitterJ SV2 with Arm Rests Oak Color
RitterJ-US-421
RitterJ SV2 with Arm Rests Bisk Color RitterJ-US-409
RitterJ SV2 with out Arm Rests Oak Color (no links yet)
RitterJ SV2 with out Arm Rests Bisk Color (no links yet)