Specifications: Lamp Size:Φ15cm/5.9". The whole wire length is 15 ft（4.5 m） The distance between switch and plug is 20 inch（50 cm） With a UL Listed Plug-In Dimmable Switch Cord. Bulb Type: E26（Bulbs Not Included）、replace with dimmable light bulbs only! Easy to install Come with a plug-in cord and necessary hanging hook. Plug-in power source, does not require hard-wiring Style: Simple Style/European Style/Vintage/Loft/Minimalist/Steampunk Applicable Space: 5-8m Square Application: Study Room, Bedroom, Living room, Dining-Room, Sitting Room, Bar, Hallway, Cafe, Shop, Balcony, etc. Please contact us if you have any question on installation or any electrical issue. Both lamp sockets are CE and UL approved If you are not sure how to install the item, please refer to a professional electrician Kindly Note Please allow 0.4-1.2″(1-3cm) error due to manual measurement and make sure you do not mind before ordering.