Jianlv unveils RS2 4.0 Ultra keyboard with 1808hr battery and 8kHz polling

Jianlv announced the RS2 4.0 Ultra keyboard on April 22. The company positions this model as a sister product to the SKN Qinglong 4.0 Ultra.

The keyboard features a 96 percent layout with 99 keys and one control knob. It uses Huannuo Yunyan switches with a 1.2mm short actuation travel. The switches offer a 42gf actuation force and a 52gf bottom-out force. The internal design includes a POM stem and a 23.5mm spring. The total travel distance measures 3.1 plus or minus 0.3 mm. The switches support a contact life of 50 million cycles.

The device supports an 8kHz polling rate under both wired USB and wireless 2.4GHz connections. It includes a built-in 8000mAh battery that provides up to 1808 hours of battery life. The keyboard runs on ZMK low-power firmware. It uses a Gasket Pro mounting structure with a hot-swappable PCB. The plate material is FR4 and the housing consists of nylon upper and lower parts. The keyboard comes with OEM height PBT double-shot keycaps and a two-stage kickstand. It also features a four-layer sound-dampening fill.

Budget 399 yuan keyboard with ZMK firmware and Gasket Pro mounting

The RS2 4.0 Ultra carries a price of 399 yuan. This pricing places the keyboard in the budget segment of the mechanical keyboard market.

Jianlv has not confirmed the launch window for the RS2 4.0 Ultra. The company also has not disclosed specific availability details for this model.

RS2 4.0 Ultra Specifications

• Layout: 96% with 99 keys plus one knob
• Switches: Huannuo Yunyan with 1.2mm actuation travel
• Polling rate: 8kHz (wired and wireless)
• Battery: 8000mAh (up to 1808 hours)
• Firmware: ZMK low-power

The RS2 4.0 Ultra is described as a sister model to the SKN Qinglong 4.0 Ultra. This classification remains a subjective assessment rather than a definitive fact.