Astrum Bluetooth Neckband Earphone ET230 earphone Unique personal optimizing analyzes the

Unique personal optimizing analyzes the sonic characteristics caused by head size

And thanks to the additional detachable cable

you’ll get a snug and secure fit that enhances sound quality

These headphones produce audio at an output of 80nW

Astrum Bluetooth Neckband Earphone ET230 earphone Unique personal optimizing analyzes theAstrum Bluetooth Neckband Earphone ET230 Specifications: Standby Time : up to 200 hours Frequency : 20Hz 20KHz Play Time : Plays up to 5 hours Charging time : up to 2 hours Range : 10m Support Profile : A2DP AVRCP1. 4 HFP Bluetooth : V4. 0 CSR Weight : 30g (approx.) Package Contents : Wireless earphone Micro USB cable User manual