Roborock Saros 20 Flow Full Specs Reveal 240 RPM Roller Mop, 301 Minutes of Runtime

Roborock has published its full product listing for the upcoming Saros 20 Flow on its Singapore website, revealing new details about its roller-mop system, adaptive chassis, dock, battery and navigation system ahead of IFA 2026.

Roborock had previously confirmed the Saros 20 Flow name and several headline features on its IFA pages, but the Singapore product page provides a much more complete look at the new flagship.

SpiraFlow 2.0 Roller Mopping

The Saros 20 Flow marks Roborock’s flagship-level move into roller mopping.

Its SpiraFlow 2.0 system uses a 10.63-inch high-density roller that spins at up to 240 rpm. Sixteen pressurized water outlets continuously supply fresh water to the roller, allowing it to rinse itself as the robot moves instead of repeatedly dragging the same dirty mop surface across the floor.

Roborock says the roller applies up to 15 newtons of downward pressure. It can also extend outward for improved coverage along walls and edges and lift up to 0.59 inch when transitioning onto carpet or between different cleaning situations.

Smart Water Level Adjustment uses the robot’s RGB camera to identify different floor types and automatically adjust water use while mopping.

Retractable Lidar and Reactive AI

The Saros 20 Flow uses Roborock’s RetractSense LiDAR system, which lowers the LiDAR module when additional clearance is needed beneath low-profile furniture.

Navigation combines retractable LiDAR, Reactive AI obstacle avoidance, an RGB camera and VertiBeam lateral structured light.

Roborock lists the Saros 20 Flow at 3.54 inches tall, slightly taller than the 3.14-inch Saros 20.

The Saros 20 Flow also includes Reactive AI obstacle recognition, a system previously featured on the Qrevo Curv 2 Flow.

Reactive AI can recognize more than 300 types of obstacles, and Roborock says the system can detect and avoid objects as small as 1.2 inches by 1.2 inches.

Stain-Target AI Cleaning uses the RGB camera to identify different types of messes. The robot can increase suction for dry debris such as coffee grounds and cat litter or switch to mop-only cleaning when it detects liquid spills. The feature must be enabled in the Roborock app.

Dual-Lifting Side Brushes

Roborock is also using the same dual lifting, arc-style side brushes found on the Qrevo Curv 2 Flow. The brushes are designed to reach into corners and clean along edges, but they do not extend outward like the side brush on the Saros 20.

The Saros 20 takes the opposite approach, using an extending side brush that does not lift.

Up to 301 Minutes of Runtime

The Saros 20 Flow has an 6,400 mAh rated battery. Roborock lists a full charging time of about 150 minutes.

Roborock’s Singapore specifications claim up to 301 minutes of runtime in Quiet mode and up to 3,746 square feet of cleaning coverage. The U.S. page separately lists up to 2,153 square feet of estimated whole-home coverage under its Standard Vacuum & Mop test.

Actual coverage will vary depending on suction level, mopping settings, floor type and how often the robot returns to the dock.

AdaptiLift Traverse Handles Taller Thresholds

The Saros 20 Flow introduces AdaptiLift Traverse 3.0, Roborock's latest system for crossing raised floor transitions.

Roborock says the robot can cross a two-stage threshold measuring up to 1.77 inches plus 1.69 inches. Combined, that represents a maximum two-stage transition of 3.46 inches.

The system allows the chassis to adjust its height as the robot approaches more difficult transitions rather than relying only on its drive wheels to climb over them.

36,000 Pa suction and DuoDivide brush

Vacuuming power reaches a claimed 36,000 Pa, matching the suction rating of the standard Saros 20 and Saros 20 Sonic.

The Saros 20 Flow uses Roborock's DuoDivide anti-tangle main brush. Its two rollers direct hair and debris toward the center suction inlet, while the entire brush assembly can lift depending on the cleaning mode and floor type.

212 F Hot Mop Washing and 145 F Drying

The multifunction dock washes the roller with water heated to as high as 212 F and dries it with air heated to 145 F. It also refills the robot’s onboard tank with warm water after washing, allowing the Saros 20 Flow to continue mopping with heated water rather than limiting hot water to dock cleaning.

Dirt detection can trigger an additional mop wash or send the robot back to reclean an area when more cleaning is needed. Automatic detergent dispensing is also included.

The dock has a 4-liter clean-water tank, 3-liter dirty-water tank and 2.7-liter disposable dust bag, and it supports automatic dust collection like other Roborock models.

Smart Home Support

The Saros 20 Flow includes Roborock's built-in "Hello Rocky" voice assistant.

It also supports Siri Shortcuts, Amazon Alexa and Google Home along with Matter smart home integration.

Pricing and Worldwide Availability

Roborock is expected to provide additional regional availability, pricing and launch details during its IFA 2026 event in Berlin.

The company’s keynote is scheduled for 6 a.m. EDT and 3 a.m. PDT on Sept. 3.

A U.S. launch for the Saros 20 Flow appears increasingly imminent. The model is already referenced in hidden content on Roborock’s U.S. IFA 2026 page and has appeared inside the company’s U.S. app as an available device for pairing.

The Saros 20 Flow also received FCC authorization July 26, 2026, just two days before the FCC added certain foreign-produced advanced robotic devices to its Covered List on July 28.

In Singapore, the Saros 20 Flow is listed at S$1,499.90. Roborock has not yet announced pricing for the United States, Canada or Europe.

Images courtesy of Roborock.