The MB FRONT 100 is a 2-way speaker system with a 4" carbon woofer (CS-MW4) equipped with a large voice coil, and a 1" tweeter (CS-MT1) with dual neodymium magnet:
The tweeter uses the ESB CS-MT1 1"/25 mm component tweeter, with special adaptor to fit many Mercedes vehicles.
The woofer uses the ESB CS-MW4 4"/10 cm component woofer, with special adaptor to fit many Mercedes vehicles.
Crossover: ESB CS-MT1CX dedicated crossover. 
Compatibility: C Class 2021+, Sedan W206, T-Model S206, Convertible A206, Coupe C206

Technical Specifications