Yes, Earth Esim offers unlimited data eSIM plans for Martinique. The plans are available in 5G coverage and include a maximum speed of 1000kbps, with the possibility of speed throttling after heavy use. Validity periods range from 1 day to 30 days, and the price range for these unlimited plans is from $3.99 to $34.99 USD. Tethering is allowed on all of the unlimited options.
Because the plans are unlimited, they are subject to a Fair Usage Policy, which means that speeds may be reduced after a certain amount of data is used. If you need more detail about the typical data volume that can be streamed at normal speed or about any specific throttling thresholds, you should contact Earth Esim directly for confirmation.