Specifications:  Name: Car power inverter 3000W.  Input voltage: DC 10.5V~15V.  Output frequency is: 60Hz.  Surge power: 3000W.  Continous power: 300W.  Output waveform: Modified sine wave.  Package Size: 7.3' x 4.0' x 5.8'.  Weight: 0.6 kg.     Adavantage:  [3000W Power inverter]:  Car power inverter with 2 USB ports and AC outlet. surge power: 3000W.  [ Fast Charging Dual USB ports]:  can charge most phones and tablets simultaneously (Max 4.1A), while AC outlets great for laptop, CPAP machine, game console, kindla, TV, DVD players, lights, iPed, RV, and other electronic devices.  [Mufti-Protection]:  Built-in fuse to protect your device, safe charging design provides protection against '+' '-' Reverse connection, overheating, under and over voltage , short circuiting, overloads, and overcharging.  [Lightweight design]:  Lightweight and compact, ideal for vacations, camping and work trips. It can be plugged into almost any 12V power output vehicle, providing charging opportunities anywhere.  [What you get]:  FULAI 3000W car power inverter, user manual, 2 x Battery Clamp, 1 x Car Cigerette Plug and 100% customer service.  (When the battery voltage is lower than 10.5V, the inverter is low voltage protection, when the battery voltage is higher than 15V, the inverter high voltage protection)    Attention:  -- Connecting the inverter to a battery, and plug your AC devices into the inverter.  -- Please do not leave the power inverter in the ON position while your car is off.  -- It's recommended to use the car cigerette lighter when electrical appliances less than 150W and connect to the battery directly when more than 150W.  -- It's normal for the inverter to become warm while you are using it.In order to get the best using results, please put the inverter on the flat surface The working place should meet the following criteria:  -- Keep dry, should not let the inverter contact the water or other liquids, keep the inverter away from moisture or water.  -- Cool environment, keep the temperature between 0 Celsius degrees and 40 Celsius degrees. Do not put the inverter next to heat vents or other devices. Try to keep the inverter not be shined directly by the sunshine.  What Size Power Inverter Do I Need? The size you choose depends on the watts (or amps) of what you want to run (find the power consumption by referring to the specification plate on the appliance or tool). We recommend you buy a larger model than you think you'll need (at least 10% to 20% more than your largest load).     Package includes:  1 x Power Inverter.  2 x Battery Clip.  1 x Plug