Technical Specifications‎:‎

• Bluetooth version‎:‎ V3.0+EDR
• Frequency‎:‎ 2.4026GHz‎-2.480GHz
• Transmission distance‎:‎ 10M / 32.80ft
• Transmission distance of Mic‎:‎ ≤1M / 3.28ft
• Li‎-ion Battery‎:‎ 3.7V/100mA 
• Charging time‎:‎ 2 hours
• Number of charge‎:‎ > 1000 times
• Charging voltage‎:‎ DC 5V
• Standby time‎:‎ 60 hours or so
• Continuous working time‎:‎ about 3.5 hours
• Bluetooth name‎:‎ Avanca BM/Bluetooth Hat/BT‎-03S ‎(‎you may search one of them‎)‎
• Color‎:‎ Blue‎,‎ black‎,‎ gray‎,‎ light gray ‎(‎optional‎)‎
• Item weight‎:‎ 87g / 3.05oz
• Package size‎:‎ 19 x 15 x 2CM
• Package weight‎:‎ 117g / 4.11oz

User tips‎:‎

• The music Bluetooth hat is designed to be reused and it is washable‎.‎ Therefor the icon panel on the hat is not fixed to the buttons‎.‎ If you the icons do not match the control buttons‎,‎ please manually adjust them‎.‎ 
• The control panel is perfectly positioned if you see full indication light from the light window‎.‎
• Press the ON/OFF button for 3 seconds‎,‎ the device is open once ‎"‎BLUE‎"‎ LED slowly flash‎.‎ Press 3 seconds again‎,‎ device close‎.‎
• Press the ON/OFF button for 5 seconds while RED & BLUE LED slowly flashing alternately‎,‎ device is on pairing mode‎.‎
• Due to different Bluetooth module‎,‎ you may search one of the Bluetooth name‎:‎ ‎"‎Avanca BM‎"‎‎,‎ ‎"‎Bluetooth Hat‎"‎‎,‎ ‎"‎BT‎-03S‎"‎ on the Bluetooth device list of your smart phone‎,‎ no password needed‎.‎
• Make sure you enable both call audio and media audio on your Bluetooth set up menu on your phone‎.‎
• You might have to manually adjust the hat to find the Micro USB charging port because the Bluetooth hat is washable‎.‎