Compatible with On Call® Plus, On Call® EZ, and On Call® EZII meters (not compatible with On Call Dual GK Meter). Certified to meet ISO 15197 standards for accuracy and reliability. No coding required when used with matching meters, simplifying operation. Long shelf-life ensured by fresh stock from authorized distributors. Includes code chips in larger pack sizes to assist with meter calibration. Compact vial containing 25 test strips per pack (larger packs available: 50 or 100 strips). Fast and precise glucose readings at home, cost-effective and convenient.