How long can the DAREU FLEX75 battery last, and does RGB backlighting affect it?

The keyboard has a built-in 4000mAh rechargeable battery. According to the product description, it can last up to 24 hours with RGB backlight on, or about 120 hours with the backlight turned off.

What connection modes does the DAREU FLEX75 support for use with different devices?

The DAREU FLEX75 supports three connection modes: Bluetooth, 2.4GHz wireless, and USB-C wired. It is compatible with computers, laptops, tablets, and smartphones.

Questions & Answers: DAREU FLEX75 Wireless Mechanical Keyboard, 75% Hot Swappable Custom Gaming Keyboard with Knob, Gasket Mount, RGB Backlit, PBT Keycaps, 3-Mode BT/2.4G/USB-C for Office & Gamers

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DAREU FLEX75 Wireless Mechanical Keyboard, 75% Hot Swappable Custom Gaming Keyboard with Knob, Gasket Mount, RGB Backlit, PBT Keycaps, 3-Mode BT/2.4G/USB-C for Office & Gamers

TRI-MODE CONNECTION - DAREU FLEX75 wireless mechanical keyboard supports 3 versatile connection modes: Bluetooth, 2.4G wireless, and USB-C wired, enabling stable pairing with computers, laptops, tablets, and smartphones.
5-LAYER GASKET MOUNT STRUCTURE FOR SILENT & CREAMY TYPING EXPERIENCE - Adopting premium 5-layer complete gasket-filling structure with multi-layer sound-absorbing padding inside, this gasket mount keyboard optimizes key bounce elasticity and eliminates hollow cavity noise effectively.
4000MAH LARGE CAPACITY BATTERY - Built-in 4000mAh high-capacity rechargeable battery delivers outstanding endurance: keep RGB backlight on for up to 24 hours continuously, or last roughly 120 hours with backlight turned off, letting you travel for a whole week without carrying extra chargers and getting rid of low-battery anxiety.
METAL CONTROL KNOB & DOUBLE-SHOT PBT KEYCAPS - Equipped with exquisite CNC metal rotary knob on the keyboard corner for multi-functional control. Rotate the knob to adjust system volume smoothly and click it for instant mute during online meetings without clicking your mouse. Matched with double-shot injection-molded PBT keycaps, this mechanical keyboard features anti-sweat, anti-shine and color-fade-resistant keycaps, keeping a non-greasy matte texture even after 3+ years of frequent heavy use.

$49^.99 –