Functional requirements

We want to develop a field for numeric values which will provide the facility of having up/down spinner buttons to increase or decrease the numeric values. Also, a user can edit the value within the field. There will also be a configuration option to show a user-defined label as a unit name just beside the numeric value within the field. There will also be options to get the value from this field, which will be just the numeric value and also the numeric value including the unit name exactly as it shows within the field.