SHANREN DI-PRO – Bluetooth/ANT+ Smart GPS bike computer with Detachable Headlight and Smart Warning Lights – 96 hours GPS Tracking How it Woks: 1. 2.7-inch Big Screen 2.7 intuitive screen with 28 data display, Di-Pro presents pretty much everything you need no matter for casual or professional cycling sport. 2. Virtual Power Have you ever thought of getting a consistent power reading on the road and on the trainer WITHOUT a power meter? Try Shanren Di-Pro. The Virtual Power function of Di-Pro is going to let you enjoy the benefits of structured training in a most economical way. . 3. High-Precision GPS System 4. Detachable Optic Lighting System 5. Smart Warning Light. 6. Call & Text Notifications. 7. Get More Space on Your Handlebar. Specifications: Model Number: Discovery Pro Headlight brightness: 260lm Light source: CREE white LED *1 Headlight working mode: High/Mid Headlight working time: 3/6hrs Li-ion battery: 2800mAh Micro USB rechargeable Charging: Micro USB, 2hrs (5V/1.5A) Waterproof: IP65 Weight: 135gram Package content: 1 x Main Unit (Discovery Pro) 1 x Bracket; 1 x USB Wire; 1 x Manual Special Note: Contact Shanren team via FB (/shanrentech) for any product guide.