There are 7 HELIX 7 models ... All have 2d (except HELIX 7X GPS) ...

Mapping/Chartplotting only on GPS models ...

DI models are dedicated DI and 200/455 2d ...

SI models are SI, blended DI from SI, and 200/83 2d ...

HELIX 7 SI GPS
HELIX 7 SI GPS KVD
HELIX 7 DI
HELIX 7 DI GPS
HEKIX 7 SONAR
HELIX SONAR GPS
HELIX 7X GPS