Description:Do you want to have a helmet with playing music function? This waterproof Bluetooth product could satisfy you, which makes your life more convenient and safer. Purchase one for yourself and it will not disappoint you.Features:Stability and Safety:When you are riding at high speed riding, it will give a downforce to you.Impact and Penetration Resistance :Three-tier structure, more secure.Clear and Smooth Calling:Bluetooth headset and wind-noise reduction microphone.100 Hours Standby Battery Life and 8 Hours Talk:Provide you more spare time for enjoying the life.IPX4 Waterproof and 8 Vents Design:Make your head dry and comfortable.Removable Mask and Lining:Convenient to clean and easy installation.Parameter:Charging Time: 3hBluetooth Connection Distance: within 10mOperating Temperature: 0℃ - 50℃Please Notice: 1. Please select a helmet that could fit your head well, not easy to shake and no discomfort.2. When wearing the helmet, please push the goggle up, then put the helmet on your head, adjust the strap and tighten it well to prevent it from falling off.3. The goggle must be adjusted to the proper position during driving to ensure facial safety.4. If the helmet is hit seriously, please stop using it.5. The helmet can be wiped with water, but cannot be wiped with organic solvents such as alcohol and gasoline or corrosive liquid such as acid and alkali.6. The helmet should be stored at a cool and ventilated place to avoid being moisture.Package weight: 1.242 kg Product Size(L x W x H): 30.00 x 24.00 x 12.00 cm / 11.81 x 9.45 x 4.72 inches Package Size(L x W x H): 33.00 x 24.00 x 22.50 cm / 12.99 x 9.45 x 8.86 inchesPackage Contents: 1 x Helmet, 1 x USB Cable