1. USB &amp; DC dual interface <br>2. Hold up 4 x 18650 batteries <br>3. Size = 9.5cm x 5cm x 5cm <br>4. Weight = 125 gram <br>5. Output = 8.4v <br>6. Waterproof and shockproof (not for diving use) <br>7. Suitable for bicycle, scooter front light n etc <br>8. Can be used as power bank<br><br><img src="https://gdetail.image-gmkt.com/424/717495336/2018/2/91190647-54d0-466a-91bd-50f86090f773.jpg" width="940" height="940" ><br><img src="https://gdetail.image-gmkt.com/424/717495336/2018/2/5cbdee5c-0f45-4e20-8c97-91462f84b738.jpg" width="940" height="940" >