IDEAPLAY ES368 Bone Conduction Open Ear Headphone 5.0 Bluetooth Black

"Used - Excellent Condition (Grade A) - The item is in a pristine, like-new condition. It is fully functional and has been professionally inspected and cleaned. The item may not come with its original packaging and contains all OEM accessories. Package Includes:1 x IDEAPLAY ES368 Bone Conduction Headphone, 1 x Micro USB Cable, 1 x Storage Bag, 1 x Silica Gel Earplugs, 1 x User Manual Specification: Minimum Frequency Response : 20 Hz Maximum Frequency Response : 20 kHz Impedance : 8 ohms Sensitivity : 87dB ±3dB Connection Type : Wireless Wireless Connectivity : Bluetooth Bluetooth Version : V5.0 Maximum Wireless Range : 33 feet Built-In Microphone : YES Maximum Talk Time : 6 Hours Stand-By Time : Up to 10 days Water Resistant : IP55 Battery Life : 500 Times Cycle Battery Life Per Charge : 6 Hours Battery Charge Time : 2 Hours Charging Interface : Micro USB Port Battery Capacity : 200mAh Product Size : 5.27*3.85*1.73 inch Product Weight : 1.34oz"