However confidant we are that you will love your HearTones Baby Doppler, we still offer a 10 day money back guarantee. If you are unsatisfied with our product or services in any form, just return the Doppler within 10 days of the delivery date (the day you receive the Doppler) and we will fully refund you, no questions asked. We cannot refund any additional shipping costs, if applicable. If you are interested in renting or purchasing a HearTones Baby Doppler but have some questions or doubts, just give it a try for 10 days risk-free! Please note: We do not offer refunds for Ultrasound lotion purchases.