1、Using die‑cast aluminum shell and tempered glass, it can deal with the harshest environment, dust‑proof, moisture‑proof, IP68 waterproof, rust‑proof and shock‑proof. 2、20 color combinations, 5 adjustable brightness levels, and 10 flash speed options. With memory function, steering and braking functions, it can also track the last preset mode. 3、Bluetooth control includes functions such as music synchronization, sound synchronization, timing, DIY color and mode, etc; Remote control of single color and RGB mode, etc. 4、Wirelessly adjust its color, brightness and flash speed through the mobile phone. The for BLEDIM application can be used in the for iOS Application Store or for Google Play‑for Android 4.3 and above and for iOS 7.0 and above. 5、Wide application range, suitable for 15.5‑inch wheel rim, perfect decorating your vehicle. Installation is simple, no complicated tools and procedures are required. Item Type: Wheel Ring Light Material: Aluminum Working Voltage: DC12V, light on the outer side Light Strip: RGB 5050SMD epoxy waterproof light strip, Cable Length: Approx. 4 meters/13.1ft Number of Lamp Beads: 288pcs/set (15.5 inches) Wheel Hub: 6063 Aviation Aluminum Control Box: External Cable Length 52cm/20.5in (PRO RGB single Bluetooth control box) Waterproof Rating: IP68 Application: Universal 15.5-inch wheels Battery Type: CR2025 button battery (not included) 4 x Wheel Light 20 x Mounting Brackets 20 x Mounting Screws 20 x Mounting Bolts 1 x Remote Control 1 x RGB Control Box 1 x Installation Guide 1 x Remote Control Manual