The K65 Bluetooth-compatible earphone features a unique retractable design, allowing the earpiece to be pulled out when needed and retracted back into the device when not in use Incoming call vibration and numbers announcement, ensures you never miss an important call, even in noisy environments With Bluetooth-compatible 5.2 technology, enjoy a stable connection up to 10 meters away The earphone also supports both Chinese and English language switches for versatile use LED display shows the remaining power, more convenient to use Specifications: Bluetooth-compatible version: V 5.2 Transmission distance: 10m Charging voltage: DC5V Charging time: 20 minutes Talk time: 20 hours Music time: 20 hours Standby time: 6 months Battery capacity: 140 mAh Package included:1 x Lavalier Bluetooth-compatible Earphone1 x Charging Cable1 x English User ManualOther items not include