USB-C Rechargeable Flashlight: The 2rd generation of RovyVon Aurora A28 keychain flashlight is upgraded to USB-C charging port that is more convenient nowadays. You can charge your RovyVon A28 with your phone charger, laptop, quick charge power bank, and wall charger, fast and simple. Upgraded Battery Longer Runtime: The battery capacity of upgraded A28 has increased to 850mAh for a longer runtime compared to the older version. The max runtime is 152 hours at the moonlight mode (0.5 lumen). One time charging supports such a long runtime, always ready to go.