ZAP Stun Gun 950,000 Volts Blast Knuckles 950,000 volts. Perfect for joggers. Unique patented design. Soft rubber coating. Contour grip assures full control. Includes Leather Holster. Specifications Overall Length: 4.375 Inches Overall Width: 3.125 Inches Voltage Output: 950,000 Volts Construction: Thick Durable ABS Electrode Contacts: 2 Total, All Metal Power Source: 2 Lithium Batteries, CR123A (Included) Also Includes: Carry Case, 2 Batteries