Monster XKT16 1. Upgraded Bluetooth 5.3 chip, the connection is more stable and the delay is lower, and it supports Bluetooth devices 2. Support ACC/SBC HD audio decoding 3. 13mm dual-frequency large moving coil unit, composite dual-diaphragm, high-frequency analysis4. True TWS, regardless of main and auxiliary ears, free switching between ears, can be used alone5. Take it out and connect, pair in seconds, and automatically pair after the first pairing6. 300mAh charging case,long battery life, 4-5 hours in a single use7. Adopt Type-c interface, fast charging, charging compartment magnetic design SpecificationModel: Monster XKT16Bluetooth Version: V5.3Speak Unit: 10 mmBattery capacity: 30mAhMusic Time:About 4 hours(Earphones)Charging Time: About 1.5 hour(Earphones)Transmission Distance: Up to 10 meters / 33 feetCharging Compartment Battery Capacity:300mAh/3.7v