2 arms to Hold all Laptop uptp 15.6″ and 3-13″ tablet or smartphone/iPhone ( Compatible with IPAD Pro 12.9″,MS surface in tablet mode without keyboard) at the same time -Compatible with iPAD Pro 12.9 inch -The item hold 10-15.6 inch laptop and any tablets 5-13 inch , ipad Pro, all iPads, iPad Mini,iPad 2,3,4, iPad Air, Galaxy Note, Galaxy 12.2″/MS surface Pro (Tablet mode without keyboard), Kindle Filre HDX, Goodle Nexus, any size smartphone(comes with 4 diffent holder (Laptop , Tablets(7-12.2). smartphone(3.5-5 inch) – Just click in and out to hold different tablet/laptop/smartphone – The arm stretchs and turns for best angle and distance. – The arm is height adjustable for best height. (low 310mm:12.2 inch – 1020mm,:40.16 inch)- The legs can be slided inbetween bed mattress to get higher viewing position. – Made of Aluminum alloy , very durable and strong and light (Very elegant design) -The laptop tray and tablet holder turns 360 degree to side .Laptop tray tilt around 25 degree and tablet tray tilt 180 degree up/down. – The item weight total around 4.5 kg (9.92 pound). – The item comes in semi kits or assembly in safe box with assembly guide.