brand new and high quality Features: SAFE, DURABLE, COMFORTABLE: Our men's and ladies bike helmet can withstand whatever weather you can. The battery lasts about 6 hours on flashing mode and 2 on solid mode. Helmet fits most heads size 57-62cm comfortably. TAP TO TURN: When you're making a turn, simply tap the corresponding button on the included wireless handlebar remote. Even with the bicycle helmet - You should still make the appropriate hand signal when you're making a turn! FULL STOP: If the Hard Brake Light feature is activated, LEDs on the back of this adult bike helmet will glow solid red, making it abundantly clear to anyone behind you that you're slowing down. Note that this feature is deactivated by default to save battery life. GET NOTICED ON THE ROAD: With white LEDs on the front, red LEDs on the back, and orange LEDs for each turn signal - drivers, pedestrians, and other cyclists alike are going to see you coming when you're wearing a Helmet. Now you can ride in increased safety without the need for a bevy of accessories. for Smart Flash Lights: The wireless taillight will give you directions to turn left or right, noticeable from quite a distance, and inform the vehicle behind you of your riding intention in for time. Adds better visibility to autos and other bicyclists, clear and highly recognizable, to make riding safer. Bicycle Helmet Set only,other accessories demo in the picture is not included. Specification: Power Supply: USB Charging Charging Time: 2 Hours Using Time: 6 Hours Features: Ultralight, Intergrally-shaped, Insect helmet net Function: IP55 Waterproof, Shockproof, Safety Material: PC + High Density EPS Suitable for Head Circumference Size: ap.57-62cm/22.44-24.41in Color: Black Quantity: 1 Set Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents: 1 x USB Rechargeable for Smart Bike Helmet 1 x Remote Control 1 x USB Charging Cable