Very rare and complete 1985 Seiko PC Datagraph RC- 4000 in very good condition. Worlds First Smallest Computer Terminal Watch. This is one of the hardest to find models of the Seiko wrist terminal line. Set consisting of: Watch from 1985 + cable with watch interface + Watch Manual The color of the watch is shiny silver with black lining. The strap is original and also silver color. These color scheme is very rare and has a chic appearance. The display is an unusual thee line dot-matrix type. The watch has a memory of 2K, It has a communication port connecting to the computers from that period. This is a very unique and hard to find model from the Wrist Terminal Line by Seiko. The watch is in very good condition, tested and runs perfectly. (no battery included). Dimensions: The watch case is 34x40x10 mm excl. the buttons The strap measures 19 cm in length. Total box dimensions: 245x155x40 mm Please see the pictures for the nice details. The watch be shipped worldwide by registered and insured post.