New BY8 Bluetooth wireless TWS sleep earphones, dual ear mini portable digital display with compartment

BY-8 parameters: Bluetooth version: V5.3 Bluetooth chip: Jerry 6983D2 Bluetooth distance: approximately 10M Charging compartment battery: 300MAH Earphone battery: 30MAH Horn: F10 genuine copper ring Listening to music call time: about 4 hours Charging time: approximately 1 hour Frequency: 20Hz-20KHz The impedance is 32 ohms Sensitivity 115dB/mW Waterproof level: Domestic waterproof Package size: 9.5 * 7.5 * 2.8CM Complete set weight: 55G Charging compartment size: 5 * 5 * 2.2CM Charging compartment+headphone weight: 28.5G Accessories: One instruction manual, one charging cable, one charging compartment, one hanging rope, two earphones