The specifications Frequency response (Hz): 20-20000 Features : This is a new tws Bluetooth headset Impedance (ohm): 32 Ohm Sensitivity (dB): 108dB Talk time (H): 2-3 hours or so The talk time and music time of this tws is approximately 2-3 hours after once fully charged Music Time (H): 2-3 hours or so Standby time (H): 1000 hours Charging time (H): 1 hour Box contents 1 x a pair of headphones 1 * cargo box 1 * USB charging cable 1 * User Manual free gift：selama persediaan masi ad #Bluetooth #Earphones #Headphone #MINI #I12 TWS #Wireless #WirelessEarphones #phoneaccession #USB #chargingcable