You can link it to your smart phone to be able to go back and compare. Better monitoring

You can add your computer or your smart phone to keep track and be able to go back as far as I want for comparison purposes

No, you can read your daily progress on the devise. The computer, tablet or phone works well to track ongoing progress, diet, sleep, etc.

No. All the information is available to see right on the tracker screen.

Yes, to set it up and charge the battery. Whether you use the app or not, it will still display your steps, calories burned, etc. on its screen.

Yes, it interfaces with all 3!

Yes you do. That is what it syncs up to do you can view current and past daily res. Tracks your sleep to #if you are getting enough test, how restless you are too. I sync mine to my Note 5 phone and my pc. Can't give this tablet enough kuddos!

Yes to see daily activity and weekly progress. It resets daily and you can't go back and see totals without internet

I have it programed tomy lapop and phone.

Do not need other electronics for basic day-to-day functions. Other electronics would be for storing histories and reviewing longer term trends. Device provides ample features and functions without needing other electronics.

this fitbit comes with a soft wrist band to use at night with it if you choose to track your sleep.

Yes, you just pull it out of the clip and slide it into the sleep wristband.

Yes, you can wear the wrist band while you sleep if you choose to

No the wrist band won't fit, but the clip will fit into the wrist band.

Yes, I wear mine every night. Now, there are times it slips out of the wrist band and I find it on the floor or in the bed somewhere.

Yes. You can put it on the wrist strap. I personally clip it to my PJ and set it there.

Yes, mine came with a band specific for sleeping. The Fitbit one slips in the wrist band.

No. It is designed to slip into the band with the clip taken off.

Absolutely. The wristband came with mine.

This model comes with a band for sleeping.