The Tekto F4 Echo is a manual flipper folding knife engineered to emphasize control, intentional movement, and refined everyday performance. The fine‑edge reverse tanto blade measures 3.40 inches and is manufactured from S35VN stainless steel with a titanium coating, hardened to a range of 60–62 for excellent edge retention, corrosion resistance, and long‑term durability. The blade geometry delivers a reinforced tip for precise work while maintaining efficient slicing performance, and overall open length measures 7.70 inches to balance reach with carry efficiency.

Deployment is achieved through a flipper mechanism that provides deliberate, controlled opening, secured in use by a button lock that allows smooth, confident disengagement. The handle combines aluminum with G10 to deliver a rigid yet lightweight structure, measuring 4.30 inches in length and approximately 0.5 inches in width for a slim, comfortable grip profile. Total weight is approximately 2.64 ounces, supporting effortless all‑day carry. An ambidextrous pocket clip enables flexible carry orientation, while a lanyard hole adds additional retention and customization options. Designed for real‑world carry, the F4 Echo blends premium materials, balanced ergonomics, and purposeful operation into a modern folding knife built for consistent daily use.