Lumos Matrix is the star of our urban helmets. With it's minimalist design and it's customizable 7x11 RGB LED panel on the rear, this is the perfect choice for the adventurous urban explorers. It comes fully integrated with turn signals and LED modules that ensure 360 grades coverage - ensuring you're seen by motorists from all angles. Lumos Matrix is compatible with Strava and the Apple Watch. Size: Length 10.6” (27cm), Width 8.2” (21cm), Height 7” (18cm). Weight 20.46 oz. (580g), MIPS 20.81 oz. (590g). LED Configurations: Front 22 White LEDs. Rear 77 RGB programmable LEDs. Up to 1000 lumens of illumination. Automatic brake lights. Turn signal capable Battery: Battery Life: 4-10 hours dependent on settings. 3.7V 1800mAh Lithium Polymer rechargeable battery. 5 hours charging time. Wireless: Bluetooth 4.0 Other Features: Apple Watch. Apple Health. Strava Compatible.​​