The GP Ultra 9V Alkaline Battery offers longer lasting power for appliances including microphones, smoke detectors or walkie talkies. G-TECH Harnesses 4 powerful breakthroughs, from the inside out, with a power boost of up to 50%. High-density Zinc S powder High-density Zinc S powder in the power core provides fast, potent power generation and improved performance. Multi-ring Core with High-purity Graphite Enhances electrical conductivity and preserves power for use over longer periods of time. Streamlined Inner Design Streamlined inner design and tough, corrosion-proof steel increase capacity of reactive materials for higher power generation. Patented Leakage Prevention It means that a patented nylon sealing ring and durable corrosion-proof design ensure long-term battery storage while preventing battery leakage. Specifications Weight: 47g Size: 26.1 (L) x 17.1 (W) x 48.5 (H) mm Voltage: 9V