JBL TWS 4 Wireless Earbuds

JBL TWS 4: Discover the freedom of a wireless lifestyle listening to music, managing your calls or working-out Immersive JBL Signature Sound delivered in an intuitive, intelligent package. Enjoy an entire day of wireless audio, with 4 hours of continuous playback and 20 hours of backup power from the charging case. Truly wireless in-ear headphones. JBL signature sound.   JBL TWS 4 - Specification: • Bluetooth Version: 4.2 • Effective Distance: 10meters • Charging Input: DC 5.0V 500mA • Charging Time: 1.5hours • Working Time: 8hours • Frequency Range:20-20KHz • Sensitivity: 98dB • Impedance: 32Ω