Optimize product title: Enhanced Bass Wireless Bluetooth Headphones with Dual Speaker System

Product information:
Color: L50 Black (heavy bass four speakers IPX5 life waterproof long standby 30H)
Bluetooth version: Smart Bluetooth 5.0
Bluetooth distance: 10m
Audio decoding: SBC
Frequency range: 20-HZ-20KHZ
Battery: polymer lithium battery 30Mah
Runing hour: 5-6H
Standby duration: 40-50 hours
Charging voltage: DC 5V
Discharge voltage: 500MA
Interface: TYPE-C/contact magnetic suction