It’s easy to slip into ‘marketing speak’ when writing copy. But naked attempts to sell are likely to raise your readers’ defences. Try reading your copy to a colleague. Can you read it naturally? Or does it make you feel uneasy? If the latter, this could be a sign that you need to write in a more natural style.
Try this
Record yourself explaining the product to a friend. Transcribe it. Use that as your first draft.
Ideas
Open a ten-minute sprint with Write like people speak as your prompt.