I'm selling a tablet/smartphone stand that I bought new a month ago for indoor cycling, but ended up not using. I've thrown away the box and instructions, but it's easy to assemble without tools, so you shouldn't have any trouble. How about using it while reading or playing a musical instrument? ~~~~~~~~~~ Product Details ~~~~~~~~~~~~~ Compatible Devices: Tablets, Smartphones Brand: EXTEDRG Manufacturer: EXTEDRG Other Features: 360-degree rotation, arm, grip Material: Aluminum Assembly Type: Floor Stand Product Dimensions: 21 x 33 x 157 cm; 1.4 kg Item Weight: 1.4 kilograms 【Height Adjustment & Combination Pole】The three-section pole can be combined to reach a height of 164cm. You can also remove the first section of the pole (40cm) for lower use. By turning the rotary knob counterclockwise, you can easily fix the arm, eliminating the worry of the arm falling and allowing you to comfortably operate the screen. The height adjustment range of the second section pole is 80-164cm from the ground, and the height adjustment range of the first section pole is 40-124cm from the ground. Free your hands and enjoy TV, entertainment, work, and study while standing, lying down, or sitting – it's the ultimate assistant. 【360-degree Rotation】The tablet stand holder uses a ball joint, allowing for 360-degree free rotation. The foldable arm is freely adjustable, allowing you to adjust the arm to your desired comfortable position. 【Durable & Stable Base】Made of high-quality alloy, it has a good texture and excellent durability. The metal pole is made thicker for sturdiness and support. The rectangular base has been expanded to 22*33cm, increasing its load capacity. Furthermore, the base weighs 1.4KG, enhancing stability without shaking or trembling! Since the pole is on one side of the base, you can place heavier items on the opposite side, so there's no risk of your smartphone or tablet tipping over due to excessive weight. Non-slip mats are processed on the bottom to stabilize the stand and prevent scratches on the floor. 【Compatible Devices】Compatible with 4-inch to 12.9-inch iPads, iPad mini, iPhone 5/6/7/8/X/XR, iPad air, iPad air2, REGZA Xperia Galaxy ARROWS tab, SONY ELUGA Live Kindle, Switch, etc.