F19 BT5.2 Wireless Business Headphones with Microphone Ear-Hook Earphone Single In-Ear Earbud Battery Digital Display for Office Working Driving Running Black Features: [BT 5.2 Connection] The BT 5.2 technology reduces power consumption, improves connection stability and reliability, and provides a longer battery life. [Comfortable to Wear] The earbud head is 270-degree rotatable for both left and right ears wearing. Suitable for express delivery, fitness, driving, running, etc. [Hands-free Call] Built-in Microphone grasps the detail of voice, ideal for in-car calling or working use. CVC6.0 noise reduction filters outside noise to improve speech clarity. [Long Battery Time] 350mAh rechargeable battery lasts about 50 hours of working time and 120 hours of standby time on one full charge. Supports battery allowance digital display. [Easy Operation] Simple operation, easily controls playing/pausing, previous/next songs, answering/rejecting/ending an incoming-call. Specifications: Model Number: F19 BT Version: 5.2 Operation Range: Up to 8 meters (no obstacle) Headset Battery: 350mAh rechargeable Lithium battery Working Time: about 50 hours (depends on volume) Standby Time: about 120 hours Charging Time: about 2 hours Charge Port: Type-C Charging Voltage: DC 5V Color: Black, Blue, White (Optional) Main Item Size: 8.0*5.0*0.8cm/3.15*1.96*0.31in Main Item Weight: 13g/0.45oz Package Size: 13.3*8.0*2.5cm/5.23*3.15*0.98in Package Weight: 41g/1.44oz Package List: 1 * BT Headset 1 * USB Cable 1 * User Manual (EN/CN)