Just because I fall asleep every night with the Amazon Kindle Paperwhite Signature Edition does not mean I do not love it. This is my go-to reading device, and before I say more, I should inform you that the Prime Day deal on my favorite ereader is just about to end. You'll want to act fast if you want to sleep with your own e-reader.

I've been reading on Amazon Kindles since the second edition rolled out in 2009. I think I was sold on the gadget when I watched horror master Stephen King read his short story, Ur, on it.

• Browse all early Prime Day deals at Amazon

Multiple models (and design changes) later, my Kindle Paperwhite Signature Edition travels the globe with me; it recently accompanied me to California and South Korea in the space of two weeks (on one charge).

Wherever I go, I read and, if it's at night and I'm in bed, I fall asleep with the Kindle Paperwhite resting on my chest. It doesn't judge and just eventually falls asleep on its own (or goes into low-power sleep mode) until someone pulls it off me and puts it on the end table beside the bed.

There are cheaper models than my Signature Edition. The base Kindle is during Prime Day 23% and comes in at just $84. That's a bargain. My signature Edition doubles the storage to 32GB, adds a front ambient light sensor (to auto-adjust the lights that can illuminate the reflective display), and includes wireless charging. On the last bit, I've found that I can drop my Jade Paperwhite on any Qi charger and it will start grabbing juice.

At 28% off, the Kindle Paperwhite Signature Edition is $144.99 (was $199.99) for Prime Day, which ends tonight at midnight. In the UK, it's just £137.74 (down from £189.99). Also, remember you need a Prime subscription to access these deals.

Today's best Kindle Paperwhite Signature Edition deals

I know, wireless charging is probably a nice-to-have since my Paperwhite Signature Edition lasts for weeks on a charge. Seriously, how many gadgets can you take on a week-long trip without having to charge even once?

The other reason I still love Kindle ereaders is that they are single-purpose devices. When I go on vacation, this is generally the one gadget I'm looking at on the beach and am happy to leave email and social media behind. I read for hours and only occasionally fall asleep (the beach lounge chair is simply not as comfortable as my bed). The 300ppi screen is sharp, fast (20% faster than the last model), and in the sunlight, bright without needing a backlight.

Also, since I can burn through books on the sand, I'm always happy that the 32GB of storage can hold thousands of books and magazines.

One thing I do not worry about when on the beach is a splash of water. The Paperwhite Signature Edition is fully waterproof (I have dropped them in pools to prove this feature works as promised).

Look, you may never fall asleep with your Kindle, but I bet you will have a few sleepless nights if you miss this chance to grab a cheaper one. Happy reads or snoozes (or both).

More early Prime Day deals in the US

• Amazon Devices: Fire Sticks & Echo from $18
• Amazon Haul: viral gadgets, tech & appliances from $1.99
• Apple: MacBooks, AirPods & AirTags from $29
• Beauty: 50% off toothbrushes & hair tools
• Cheap TVs: smart TVs from $69.99
• Garden: tools, mowers, planters from $24.99
• Headphones: 50% off Beats, Bose & Samsung
• Laptops: Apple, HP & Dell from $199
• Mattresses: Sealy, Serta & more from $186
• Patio: outdoor furniture, rugs & decor from $19.99
• Sports: 50% off fitness gear, treadmills & clothing
• Vacuums: Dyson, Shark & Bissell from $34

More early Prime Day deals in the UK

• Amazon Prime: sign up for a 30-day free trial
• Amazon Devices: Fire TV, Ring & Blink from £24.99
• Amazon Haul: up to 30% off
• Apple: AirPods Pro 3 for a record-low price
• Appliances: up to 45% off Ninja, Tefal & Sage
• Beauty: up to 60% off Philips & Oral-B
• Essentials: household goods from under £10
• Fashion: up to 50% off
• Father's Day: up to 50% off gifts & drinks
• Headphones: up to 50% off
• Laptops: from £149.99
• Tablets: Samsung & Lenovo from £125
• Toys: up to 25% off Lego and Tonies
• TVs: from £129.99
• Vacuums: up to 40% off Eufy & Roborock
• Wearables: Garmin & Huawei from £36.99

A 38-year industry veteran and award-winning journalist, Lance has covered technology since PCs were the size of suitcases and “on line” meant “waiting.” He’s a former Lifewire Editor-in-Chief, Mashable Editor-in-Chief, and, before that, Editor in Chief of PCMag.com and Senior Vice President of Content for Ziff Davis, Inc. He also wrote a popular, weekly tech column for Medium called The Upgrade.

Lance Ulanoff makes frequent appearances on national, international, and local news programs including Live with Kelly and Mark, the Today Show, Good Morning America, CNBC, CNN, and the BBC.