Compatible Device: Y fast charging usb cable perfect fit for HidrateSpark PRO & STEEL LED Bluetooth Sensor Puck. Easy Connection: Just place the charger close to the bottom of the Water Bottle and the charger will automatically connect it. Lightweight & Portable: you can take this HidrateSpark STEEL & PRO smart water bottle charger anywhere anytime; 60cm long cable and less than 15g weight make it meet most of daily requirements. Durable & Premium Quality: Made of high-quality wire, ensure an excellent charging experience for your water bottle. Durable High-quality ABS + PVC material and copper wire ensure stable current transmission, which assures the quality of the charge. Advanced Security: This HidrateSpark STEEL & PRO smart water bottle charging cable features over-current, over-voltage, short-circuit and over-heat protection, and other safety features for safe charging protection.