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Garmin fenix 7X Sapphire Solar, Larger sized adventure smartwatch, with Solar Charging Capabilities, rugged outdoor watch with GPS, touchscreen, wellness features, black DLC titanium with black band
I've owned Garmin fitness watches since their first running watches, and they're the class leader for a reason. Long bettery life, extensive metrics, and tools that are actually helpful like coaching programs and dynamic Suggested Workouts make this watch a winner for any athletic pursuit.
Garmin Forerunner 265 Running Smartwatch, Colorful AMOLED Display, Training Metrics and Recovery Insights, Black and Powder Gray
If the high price of the Fenix is untenable and you don't want to look in the used market, the Forerunner series is running-focused but has many of the same features as its larger and more capable brother.

Helpful Items

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SHOKZ OpenRun Pro - Open-Ear Bluetooth Bone Conduction Sport Headphones, Sweat Resistant Wireless Earphones for Workouts and Running with Premium Deep Base - Built-in Mic, with Hair Band, Black
These aren't cheap and sound worse than typical earbuds, so why recommend them? Two words: sweat and traffic. These are the only headphones that have survived heavy rains and excessive sweat--they'll even work fine in the shower. They also keep your ears open, so you can hear traffic, or your running buddy or someone approaching from behind. I'll listen to audiobooks and podcasts during longer runs, and the 'pause' button on the left ear is nice for passing leaf blowers and lawnmowers.
Sale
Balega Hidden Comfort Performance No Show Athletic Running Socks for Men and Women (1 Pair), White, Medium
Running can be tough on your feet, and after your first few miles, it's worth going to a 'real' running store and getting a proper fit since everyone's feet and gait are different. However, these socks are a great pairing for well-fitted running shoes, and do a god job minimizing blistering.
Gold Bond Friction Defense Stick, 1.75 oz., With Aloe to Soothe, Comfort & Moisturize Rough Skin
Chafing is a fact of life, especially once you start logging double-digit miles. Body Glide is the standard recommendation, but this stuff works as well (or better) and is cheaper. Just don't leave it in a hot vehicle or out in the sun or you'll have anti-chafing soup vs. stick.
Nathan Water Bottle Handheld, Grip-Free Running Water Bottle Handheld, SpeedDraw Plus Insulated Flask, Handheld Running Water Bottle for Runners, Hiking, etc. Sports Water Bottles
One you get to running for more than 40 minutes, or if you're out in very hot weather, having some water is nice. I've tried belts, soft flasks, and other stuff, but these Nathan handhelds have worked for me up to 2 hour runs and on multi-hour looped courses. Throw a couple gels in the little pouch, plan a fountain or store along your route, and you're good for even the longest runs.
Ciele Athletics GOCap SC - Premium Washable Moisture Wicking Hat with Sun Protection, 5-Panel Knit Running Hat for Men and Women - Facette
You'll eventually want a running-specific hat. Why? Obviously to keep the sun out of your eyes, but also running hats are designed to wick away sweat, and survive being repeatedly thrown into the washing machine. Look for one like this Ciele that doesn't have any velcro otherwise it will stick to your other clothing in the wash.
Sale
Atsko Sno-Seal SPORT WASH LAUNDRY DETERGENT, Liquid, 64 Fl Oz (Pack of 1), Unscented
The bottle looks janky, but this is THE stuff to use for washing your running clothes. Other detergents use scents to mask any odors, but this stuff actually cleans out the odor. As someone who sweats excessively and leaves their workout clothing funkier than James Brown, this is the only thing I've found that doesn't leave any residual stink. The small-looking bottle also goes a long way, and will restore the coating on raincoats, etc.
BioLite, HeadLamp 800 Pro, 800 Lumens, Ultra-Lightweight & USB Rechargeable with 8 Light Modes, Midnight Grey
Eventually, you may join the ranks of the stereotypical running, rising in the wee hours and putting in miles before sunrise. I like headlamps for illuminating my way versus a handheld, and this light has the added benefit of including a rear-facing blinky light to let cars know you're there.