Detailed Specs: Rated Voltage & Frequency 120V/60HZ Running VAC Amperage 33.3 A Rated Output 3700 w Max. Output 4500 w Alternator Brand Lihua Enigine Brand GENKINS GK210 Engine Type OHV, 4-stroke Engine Displacement 212 cc Bore X Stroke 2.76 * 2.17 inch Engine RPM 3600 rpm AC Load 100% Phase Single Recommended Oil SJ 10W-40 Lubrication Method Splash Choke Type Manual Fuel Tank - Gasoline 2.11 Gal Fuel Gauge YES Starting Method Manual Low Oil Shutdown YES Oil Volume 0.58 qt Compression Ratio 8.7 Ignition Type Trigger 1/2 Load Run Time - Gas 8 LCD Hour Meter NO Weather Protection on Outlets Yes Circuit Breaker Yes Muffler Yes Frame Thickness 0.047 inch Handle and wheels Optional Noise Level: 70dB/7m THD ≤3% Emissions EPA Net Weight 56 lb Gross Weight 62 lb Assembly Dimensions (L*W*H)(in.) 17.1*14.9*17.9 inch Package Dimensions (L*W*H)(in.) 21.3*17.9*19.5 inch Receptacle Details (Type and rated amps) Includes one 120V RV-ready TT-30R outlets, one 120V NEMA 5-20R household outlets with pure sine wave electricity (less than 3% THD) Accessories included Quick start instructions, Bolt sleeve