Specification AgeRangeDescription : Adult BatteriesIncluded : 1 BatteriesRequired : 1 Brand : LIVALL BulletPoint1 : Detachable Visor:Need a little extra UV protection? Use the visor to stay safe from the sun’s powerful rays. You can also quickly and easily detach it. BulletPoint2 : Fits For Your Head: Medium from 21.26 to 22.83inches(54-58cm); Large from 22.44 to 24inches(57-61cm). To ensure a comfortable fit, please choose a size 2cm larger than your actual head circumference. BulletPoint3 : Bright LED Lighting: Packed-full with smart lighting technology, it provides riders with a high level of security at all times and in all directions. Inductive LED lighting can be set to automatically turn on even in the darkest settings. BulletPoint4 : Brake Warning Lights: Activated when the built-in-gravity acceleration sensor detects a significant deceleration, the front and rear lights are enhanced for 3 seconds to draw attention from surrounding traffic. BulletPoint5 : Auto-Off Function: It ensures maximum battery longevity by automatically powering off when it is disconnected from a phone and has been motionless for 15 minutes. BulletPoint6 : SOS Alert: When wearing this riding helmet, if you don't move within 90 seconds after an accident collision, the emergency alarm function will be triggered by itself, and the SOS signal will be sent to your emergency contacts on impact immediately via LIVALL Riding APP. So you are always on the safe side even on lonely paths. Color : black Hazmat1 : LITHIUM ION BATTERIES PACKED WITH EQUIPMENT Hazmat10 : CN_SmallLithiumIonBatteryWithEquipment Hazmat11 : DE_SmallLithiumIonBatteryWithEquipment Hazmat12 : EG_SmallLithiumIonBatteryWithEquipment Hazmat13 : ES_SmallLithiumIonBatteryWithEquipment Hazmat14 : FR_SmallLithiumIonBatteryWithEquipment Hazmat15 : GB_SmallLithiumIonBatteryWithEquipment Hazmat16 : IN_SmallLithiumIonBatteryWithEquipment Hazmat17 : IT_SmallLithiumIonBatteryWithEquipment Hazmat18 : JP_SmallLithiumIonBatteryWithEquipment Hazmat19 : MX_SmallLithiumIonBatteryWithEquipment Hazmat2 : UN3481 Hazmat20 : NL_SmallLithiumIonBatteryWithEquipment Hazmat21 : PL_SmallLithiumIonBatteryWithEquipment Hazmat22 : SA_SmallLithiumIonBatteryWithEquipment Hazmat23 : SE_SmallLithiumIonBatteryWithEquipment Hazmat24 : SG_SmallLithiumIonBatteryWithEquipment Hazmat25 : TR_SmallLithiumIonBatteryWithEquipment Hazmat26 : US_SmallLithiumIonBatteryWithEquipment Hazmat3 : II Hazmat4 : 9 Hazmat5 : AE_SmallLithiumIonBatteryWithEquipment Hazmat6 : AU_SmallLithiumIonBatteryWithEquipment Hazmat7 : BE_SmallLithiumIonBatteryWithEquipment Hazmat8 : BR_SmallLithiumIonBatteryWithEquipment Hazmat9 : CA_SmallLithiumIonBatteryWithEquipment ImportDesignation : Imported ItemName : LIVALL C21 Smart Bike Helmet with LED Lights & Removable Visor, NTA8776 CPSC Certified, Bike Helmet with Fall Detection for Adults Men Women, Bicycle Helmet for Commuter E-Bike Scooter Skateboard ItemPackageDimensions_Height : 30.9118 centimeters ItemPackageDimensions_Length : 18.2118 centimeters ItemPackageDimensions_Width : 25.0952 centimeters ItemTypeKeyword : bike-helmets Manufacturer : LIVALL ModelName : urban helmet ModelNumber : C21 NumberOfLithiumIonCells : 1 PartNumber : C21 ProductDescription : C21 helmet ProductSiteLaunchDate : 2022-08-06T06:04:24.488Z RecommendedUsesForProduct1 : Skateboarding RecommendedUsesForProduct2 : Cycling Size : Medium 54-58cm SupplierDeclaredDgHzRegulation : not_applicable TargetAudience : Unisex-Adults UnspscCode : 46181700