Bluetooth version: 5.0 Charge voltage: DC5V Transmission range: 10m Talking time: 1-2hours Music time: 2-4 hours Charging time: 2 hours Box Input: 5V/330mA Earphone size 28 23"36mm Battery case: 600mAh Frequency: 2402Mhz -2480Mhz Battery in ear phone capacity: 40mAI
