Headphone Power Source- Micro USB Charging. Other Power Features- Recharge 30 Minutes before 1st Use. Technology Used- Wired & Wireless, TF Card Supported, Bluetooth, Aux Supported. Wireless Bluetooth headphones are rechargeable & Mic and with heavy bass and Best sound quality. You can play songs with Bluetooth Connectivity & Also with Aux. You can insert memory card in this headphone and play songs without connecting your phone