Garmin Suction Cup Mount w/Speaker f/nuvi 3550LM & 3590LMT Powered. It includes a speaker with the highest sound quality in the nvi lineup so voice prompts come through clearer. Mount can be attached to your windshield or any smooth flat surface. Mount and power your nvi device with this powered suction cup mount. Included speaker provides clear voice prompts. Compatible Devices: nvi 3550LM nvi 3590LMT Specifications for Garmin Powered Suction Cup Mount w/Speaker f/nuvi 3550LM & 3590LMT: Manufacturer: Garmin Color: Black Package Contents: Garmin Powered Suction Cup Mount w/Speaker f/nuvi 3550LM & 3590LMT Garmin 010-11785-00: Suction Cup Mount w/Speaker f/nuvi 3550LM & 3590LMT Powered