The IMMEKEY 2-piece sink water filter faucet is designed to mount directly onto a standard kitchen or bathroom tap, offering filtration while also functioning as a rotating aerator / purifier. features a 360° rotating head that helps with rinsing, splashing prevention, and boosting water pressure.  The faucet body is made of ABS plastic and stainless steel, designed to be heat-resistant and durable. Each unit has a replaceable filter cartridge, which is supposed to be swapped out when it “turns yellow or black,” depending on water quality.  For the 2-pack sold on Walmart, four replacement cartridges come included. the filter can remove up to 99.9% of lead, calcium, rust, iron, and other heavy metals. 
• It also targets chlorine, chloramine, and fluoride. 
• Because it reduces hard-water minerals, it may help “soften” water, which could have secondary benefits for skin or scaling. The 360° rotating head doesn't just filter — it also helps maintain a good flow and avoid splashing.
It's designed to be easy to install — no complicated plumbing required, just screw it onto your faucet.
• The rotation feature is genuinely useful: you can aim the filter where you need it, flush dead spots, or adjust for different tasks (rinsing produce, etc.).
• Cleaning and upkeep are fairly simple given the materials, and the filter housing is said to resist high temperature and deformation. • Compared to high-end countertop or under-sink systems (like multi-stage filters from Clearly or RO units), this is much simpler and less expensive, but also less powerful in terms of contaminant removal.
• Versus other faucet filters (like ultrafiltration models from Waterdrop), this IMMEKEY is more “clip-on and spin” rather than offering advanced membrane filtration. For instance, Waterdrop's CTF-08 system uses a UF membrane activated carbon to effectively remove heavy metals and chlorine. 
• The rotating head is a nice differentiator: many faucet filters are fixed and don't swivel, so IMMEKEY scores points for usability and flexibility.