i40 Bidata Display. Compact and feature-packed instruments, the i40 series instruments are smart choice for boaters looking high performance and great value.. The i40 series is simple to operate thanks to the use of just three control buttons, i40 has extra-large digits and razor-sharp LCD displays and red backlighting for outstanding visibility in all lighting conditions.. These SeaTalk compatible instruments offer full integration with Raymarine autopilots and navigation equipment. The ultra-s