Features1In-mold construction with hard PC shell and EPS lining for impact resistance and protection. 220 LEDs increase visibility from 360 degrees, keeping you safe at night. 3Turn signal lights and stop lights are easily controlled by the remote control. 423 air vents keep you cool and comfortable, and reduce the weight of the helmet. 5Adjustable dial system makes the helmet fits head circumference: 54-61cm (21.2\"-24\"). 6Includes a helmet, charging cable, remote control, remote mount, rubber band and user guide.SpecificationThis helmet with in-mold construction makes it extremely durable. The LED lights make it visible from 360 degrees, keeping you safe at night. It is a great choice for bike riding.Features:In-mold construction with hard PC shell and EPS lining for impact resistance and protection.20 LEDs increase visibility from 360 degrees, keeping you safe at night.Turn signal lights and stop lights are easily controlled by the remote control.23 air vents keep you cool and comfortable, and reduce the weight of the helmet.Adjustable dial system makes the helmet fits head circumference: 54-61cm (21.2"-24").Includes a helmet, charging cable, remote control, remote mount, rubber band and user guide.Specifications:Material: PC + EPSColor: Black / White / Blue / Dark Grey / Fluorescent Yellow (optional)Vents: 23Head Circumference: 54-61cm / 21.2-24inHelmet Battery: 3.7V 500mAh lithium polymer rechargeable batteryCharging Time: Approx. 3 hoursBattery Life: 3-5 hours, depending on settingsModes: Solid mode, Flash mode, Extended flashing modeRemote Battery: 3V CR2032 batteryWeight: 300g / 10.6ozPackage List:1 * Helmet1 * Charging Cable1 * Remote Control1 * Remote Mount1 * Rubber Band1 * User GuidePackage List1 * Helmet1 * Charging Cable1 * Remote Control1 * Remote Mount1 * Rubber Band1 * User Guide