Dimension 369 x 146 mm (14.5 x 5.75 inches) Number of Keys 86 (75% layout) Layout ANSI (US) Fully Asssembled and Barebone/ISO (EU) Barebone Back Height without keycaps 33.04 mm (1.30 inches) Front Height without keycaps 21.03 mm (0.83 inches) Front Height with keycaps 29,06 mm (1.14 inches) Weight About 1887 g (Fully Assembled version) Frame Material Full CNC machined aluminum Plate Material PC Keycap Cherry double-shot PBT keycaps (Non-backlight shine through) Switch Gateron Jupiter (Fully Assembled version) Stabilizer Screw-in PCB stabilizer Switch Face South-facing RGB Backlight 22 types of RGB backlight options plus endless possibilities Hot-swappable Yes. Compatible with most of the 3 pin & 5 pin MX mechanical switches such as Gateron, Cherry MX and Kailh, etc. MCU ARM Cortex-M4 32-bit STM32F402 (256KB Flash) Cable Length 1.8 m Polling Rate 1000 Hz (2.4 GHz and wired) / 90 Hz (Bluetooth mode) N-Key Rollover (NKRO) Yes for both wireless and wired modes Operating Environment -10 to 50℃ Battery 4000 mAh Rechargeable li-polymer battery BT Working Time (Backlit off) Up to 200 hours (Lab test result may vary by actual use) BT Working Time (RGB) Up to 100 hours (Lowest brightness) Charging Time Around 5 hours Charging Port USB type-C Bluetooth Version 5.1 Compatible System Windows/macOS/Linux Connectivity 2.4 GHz/Bluetooth / Type-C wired Bluetooth Device Name Lemokey L1 Bluetooth Operating Distance Within 10 meters (Open space)