Zoook | Rocker Twins | True Wireless in-ear Headphones with Voice Control

HD Sound: : Yes
Bluetooth Version: : V5.0
Bluetooth Profiles: : AVRCP/HFP/HSP/A2DP
Speaker Impedance & Size:: 08mm ; 32Ω
Battery Display: : Yes
Frequency Range: : 2.402GHz-2.480GHz
RF Frequency:: Maxim 4dBM /Class II
Speaker Frequency Response: : 20Hz-20KHz
Sensitivity (dB): : >90±3dB
Operating Distance: : 10-15 meters
Water-Proof: : IPX 4
Earphone battery:: 3.7V, 50mAHx2
Charging Dock battery: : 500mAh
Talk time/music time: : 20 hours*
Charging Time: : 1.5hrs
Standby Time: : 100hrs
Charging Jack: : Type C USB
Input Voltage: : DC5±0.25V
Weight:: 4.3g (Ear buds) ; 40g (Charging case)