The TEKTO F4 Echo is a lightweight manual folding knife developed in collaboration with Zastava Arms USA for everyday carry, outdoor use and routine cutting work. This American Walnut variant combines a black aluminum handle with contrasting brown G10 inlays that draw visual inspiration from classic rifle furniture. Vented handle details continue the firearm-influenced styling while helping the knife maintain a slim, distinctive profile. Its fine-edge reverse tanto blade measures 3.40 inches and is made from S35VN steel with a dark titanium coating. The angular reverse tanto profile provides a defined point for controlled detail work while retaining a practical cutting edge for opening packages, cutting cord and handling other daily utility tasks. TEKTO hardens the blade to 60-62 HRC, and the coating gives the blade a subdued matte appearance that complements the black handle. Operation is fully manual rather than automatic. A flipper tab provides convenient blade deployment, while the button-lock mechanism secures the blade during use and allows controlled disengagement without placing a finger directly in the blade's closing path. The knife measures 7.70 inches when open, with a 4.30-inch handle and a narrow 0.50-inch handle width. At only 2.64 ounces, it offers useful blade length without adding unnecessary bulk to a pocket or gear kit. An ambidextrous pocket clip supports convenient carry for right- or left-handed users, and the integrated lanyard hole provides another attachment option. A TEKTO pouch is also included for storage and transport. With premium blade steel, a button lock, rifle-inspired G10 accents and a compact manual configuration, this F4 Echo is suited to users seeking a capable folding knife with distinctive Zastava collaboration styling.Specifications and Features: American Walnut G10 inlays with black aluminum handle 3.40-inch titanium-coated S35VN reverse tanto blade Fine-edge blade hardened to 60-62 HRC Manual flipper deployment with button lock 7.70-inch overall length; 4.30-inch handle 0.50-inch handle width Ambidextrous pocket clip and lanyard hole TEKTO pouch included Collaboration: TEKTO x Zastava Arms USA Brand: TEKTO Model: F4 Echo Product Type: Manual folding knife Manufacturer Part Number: F4R_T6GBR_S35BK5_A1 UPC: 850034486154