Mammotion, primarily known for its robotic lawn mowers, is unique in the pool robot space as it produces just one model of water-bound cleaner: the Spino E1, which first arrived in the summer of 2025. Rather than dropping a new model in 2026, the Spino E1 has been upgraded with various software improvements this year, while keeping the same model ID. (Amazon listings note “2026 Upgrade,” but firmware updates should handle older stock, too.) At $499 on sale, this is a comparatively low-cost robot, albeit one that does check off a healthy number of most-wanted features. I put it to work in my pool for a week to see where it stands—swims?—against the competition. The design of the Spino is unique and perhaps divisive, with its busy color scheme that suggests a child’s toy more than a piece of expensive home equipment. The dual-tread design and central brushes are fairly standard across most pool robots, but the unit feels slightly smaller in comparison to others. At 21 pounds, it’s not exactly a featherweight, but the generally tighter, more compact chassis does make it more maneuverable when getting it in and out of the water. The unit features a 6,000-mAh battery, which is decidedly limited compared to the field. Charging is via a standard plug-in A/C adapter, via a charging port that is covered with a rubber stopper when the robot’s in the pool. I didn’t find this stopper all that effective at keeping water out of the charging port, as every time I removed the stopper after a run, I found considerable amounts of moisture inside. Nevertheless, this never seemed to impede the charging process or present any other difficulties. The Spino E1 features a simple filter basket with a hinged lid. Its 2.8-liter capacity is small but commensurate with the overall size of the device and its battery capacity. In other words, this is a robot best deployed in smaller pools (though Mammotion questionably claims support for up to 1,600 square feet of cleaning coverage). The Spi