• Material: ABS • Bluetooth Version / Chipset: V5.4 • Transmission Distance: 10M • Earbud / Charging Case Battery: 35mAh / 250mAh • Charging Time: About 2 hours • Calling Time: About 4 - 4.5 hours (at 70% volume) • Music Play Time: About 6 - 6.5 hours (at 70% volume) • Standby Time: Earbuds: About 70 hours