F9 TWS Wireless Headphones with 2000MAH Powerbank

ⅠFeature:      Product model:F9 tws earphone earbuds  BT version: V6.0  Support Agreement: Supports HFP 1.7HSP1.2, A2DP 1AVRC1.65SPP 1.2 and PBAP1.0  Chip solution: JL6983D2  Working distance: 10m  Talk time: 4 hours (full power single use)  Music playback time: 4-6 hours(full charge single use)  Standby time: 650H (requires matching charging compartment)  Frequency range: 2402MHz~2480MHz  Battery type: 3.7V, >50mAh Lithium-ion polymer battery  Headphone charging time: 1-2H  Working temperature: -10 °C-55~C  Mobile charging bank parameters:  Input current: 5V--1A  Output current: 5V--1A  Battery type: 3.7V, >2000mAh Lithium-ion polymer battery  Charging battery capacity: 2000mAh  Charging bin charging time: 1-2hour