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What is Sezzle and how does it work?
How does it work? Sezzle is a payment solution that empowers you to “Buy Now and Pay Later” with simple, interest-free installment plans. Sezzle breaks down the total cost of your purchase int...
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I have an anxiety disorder. Could doppel help me?
Research & science Amongst our current user base, doppel has been particularly effective for those with Anxiety. In our own tests, we have seen that doppel is very effective for people who are nerv...
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How to use all of doppel's touch controls
You can use the app to send different rhythms to doppel. Once set, you can leave your phone or tablet behind. Tip: Touch controls work best when doppel is on your wrist or when holding it in your h...
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Do I need a smartphone to use doppel?
App & Touch Controls doppel works with a companion app. The app can be installed on a smartphone or tablet. Use the app to pick a rhythm, take your resting heart rate, and control your doppel. dopp...
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How will I know if doppel is for me?
We’ve all wanted to change how we feel at some point. Perhaps you drink coffee to feel more alert before arriving at work. Or maybe you’ve considered taking up yoga to help wind down at the end of ...
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What happens if I miss a Sezzle re-payment?
It's ok, life happens - we understand! We chose to partner with Sezzle because they understand this too. Sezzle allows you to reschedule payments. Each order comes with one free reschedule, and...
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What’s the difference between the straight strap and the tapered strap?
The straight strap is 20 mm wide and will fit wrists with a circumference between 12 cm and 21 cm. The tapered strap is 16 mm wide and will fit wrists with a circumference between 12 cm and 20 cm. ...
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Is doppel waterproof?
doppel is water and sweat resistant and is IP65 rated, which means it is rain-proof and splash-proof. Do not swim with doppel. We also do not recommend wearing doppel in the shower. If your doppel ...
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How do I checkout using Sezzle?
Simply select Sezzle at checkout, and either log in or create the account and add a payment method. Sezzle do secure checkout by sending a one-time-password to your phone, so please make sure ...
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What do the different rhythm settings mean?
The doppel app includes five preset rhythms to help you get started. Each preset is based on our research into how different rhythms affect how people feel and how our brains understand our own hea...