Sinclair SJS1 joystick

Brand: Amstrad Consumer Electronics Plc.
Model: SJS1
Country of origin: United Kingdom
Made in: Taiwan
First year of production: 1986
Price: £14.95 (usually free included with bundles)

The Sinclair SJS1 (Sinclair Joystick System) was offered after the release of the Amstrad-designed ZX Spectrum +2 which had 2 joystick ports, unlike previous Sinclair-designed Spectrums.
The wiring was different from the de facto (Atari) standard, and could only be used with the +2, +2A and +3  machines.