Steam has their own new Switch-like handleheld Steam-device, called the Steam Deck that is coming this December 2021.
PC Gamer - 
https://www.pcgamer.com/steam-deck-handheld-announced/{quote}
Steam Deck hardware specs
Here are the specifications of the handheld itself, according to Valve:
    CPU: AMD Zen 2 4c/8t, 2.4-3.5GHz (up to 448 GFlops FP32)
    GPU: 8 RDNA 2 CUs, 1.0-1.6GHz (up to 1.6 TFlops FP32)
    RAM: 16 GB DDR5
    Storage: 64GB, 256GB, 512GB versions; expandable with MicroSD cards
    Display: 7" diagonal, 1280x800 (16:10), 60Hz LCD touchscreen
    Audio: Stereo speakers that "pack a punch," says Valve, 3.5mm stereo jack, dual mics, multichannel USB-C/Bluetooth output
    Controls: Two analog sticks with capacitive touch, D-pad, face buttons, analog triggers, bumpers, assignable grip buttons, "view" and "menu" buttons, gyro
    Trackpads: There's two of them, and Valve says that they have "55% better latency compared to Steam Controller."
    Wireless connectivity: Wi-Fi and Bluetooth
    Wired connectivity: USB-C with DisplayPort 1.4 Alt-mode support; up to 8K @60Hz or 4K @120Hz, USB 3.2 Gen 2
    Battery: 40Whr, "2-8 hours of gameplay"
    Size: 11.7" x 4.6" x 1.8" (298mm x 117mm x 49mm)
    Weight: Approximately 1.47 lbs (669 grams)
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