WHAT IS ESTEM Our idea was simple: design a biking system that makes your ride uncomplicated and fun no matter where you go, urban exploration, commuting to work, or a long distance road-trip. We conceptualized a design that integrates important biking accessories with your smartphone into one unit. This is ESTEM - the world's simplest all-in-one smart biking system, which includes a front light, phone navigation holder, and a portable charger. FUNCTIONS: Charging your phone when you are riding, the intrgrated LED system will provide a safe riding experience. TECH SPECS: Forge Precision Cutting Water Proof Anodic Oxidation Size: 179 × 61 × 78mm Stem Parameter: EXT: 100mm＋7° Mobile: IOS, Android Battery: Rechargeable lithium battery, 5400mAh Front Fork: 28.6mm Handlebar: 31.8mm LED Light: Cree, 200Lumens Width Adjustment: 50-88mm HOW TO MOUNT : Remove your old stem Mount ESTEM on your bike *The longest screw will fix the ESTEM and front fork together *The head parts cover have put in ESTEM *The battery is in the box, you only need to open the battery cover and putit in HOW TO USE : Charge the phone *Remove the waterproof cover *Push the button to open the slider *Connect your phone to the charging port *Push the slider to limit, and make sure your phone is totally griped tight Turn on the headlight *Push the headlight button *Four different light modes Activate battery *After put the battery in ESTEM, push the tiny button on the top of the battery to activate it
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