So far so good. I've
So far so good. I've noticed an increase in my HRV score after using the 'amofit s'. I will keep using it to track the longterm results.

Try our at-home blood test
Clinic-level accuracy on 38 key markers. Results and recommendations in just 72h.
In stock. Next day delivery available.
Healf Zone members get free next day delivery on all orders.
Key Benefits
amofit S uses advanced bioelectronic technology to stimulate the vagus nerve and promote balance within the autonomic nervous system. It delivers low-frequency electromagnetic signals that help the body manage stress, improve sleep quality, and enhance mental clarity. The device operates through AMO Lab’s proprietary cVES (cervicothoracic vagus electromagnetic stimulation) technology, which targets the vagus nerve in the chest using gentle electromagnetic waves similar to the body’s own natural signals.
The device features two modes—CALM and FOCUS—designed to regulate vagal tone and support specific needs. CALM mode helps ease stress and supports restful sleep by activating the parasympathetic nervous system. FOCUS mode promotes creativity and concentration by encouraging alpha brainwave activity.
Lightweight and compact, amofit S measures just 3.9 x 3.9 x 0.8 cm and weighs 14 g. Its necklace-style design allows easy, comfortable use throughout the day, providing an accessible way to maintain nervous system balance and mental wellbeing.
What’s included:
amofit S Device
Silicone Necklace
Charging Cable
User guide
Specifications:
Model: amofit S (AL-101B)
Weight: 0.03 lb (13.9 g)
Size: 1.61 x 1.4 x 0.35 inch
Battery: 3.7v, 80mAh Li-Polymer
Battery Life: 8-9 hours
Charging Time: 1-1.5 hours
Ambient Temperature: 0-104 ℉ (0-40 ℃)



So far so good. I've noticed an increase in my HRV score after using the 'amofit s'. I will keep using it to track the longterm results.
It seems to improve my HRV!
It has settled my sleep back into a good, predictable rhythm and boosted my focus in the mornings.
Every product undergoes our Healf Curation Process. With it, you can shop confidently knowing that every item has been tried and tested before it reaches you. Our Healf Curation Process includes three key steps: Brand Discovery, Expert Validation, and Community Testing. Through these, we assess quality, ingredients, effectiveness, and more, ensuring that every product empowers your wellbeing.
The Healf Source offers detailed insights into different aspects of wellbeing, as well as guidance, research, recipes, and more to help you invest in your personal wellbeing journey. You can also subscribe to our weekly newsletters for the latest updates at Healf and in the wellbeing industry. Subscribe via the sign-up block at the bottom of this page.
We love people who check ingredients as carefully as we do, so you'll find detailed information about the ingredients used on every product page (where applicable). If you see something you'd like to flag with us or have additional questions, please don't hesitate to get in touch—we'd love to hear from you.

Every product undergoes our rigorous Healf Curation Process, ensuring you are always getting the best when it comes to your wellbeing.