Light Cycling Helmet USB Rechargeable Bike Ultralight Helmet Intergrally-Molded Mountain Road Bicycle Mtb Helmet

1. Feature: Ultralight, Intergrally-molded, Insect net helmet

2. Function:Waterproof, Shockproof, Safety

3. Battery: 2000 Milliampere

4. Time:       

• Mighty   about 4 hours
• Low       about 9 hours
• Flash     about 24 hours
• Only side & rear warning light about 1 month
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