Lenovo HE05X Neckband Earphone

𝐒𝐩𝐞𝐜𝐢𝐟𝐢𝐜𝐚𝐭𝐢𝐨𝐧
 Brand: Lenovo
 Model: HE05X
 BT version: 5.0
 Material: metal, silicone, TPE
 Transmission distance: 10m (accessible)
 Waterproof: IPX5
 Dustproof: IP6X
 Battery: 3.7V / 105mAh
 Working time: about 8 hours
 Standby time: about 120 hours
 Charging time: about 2 hours
 Horn diameter: 12mm
 Speaker sensitivity: 98dB
 Frequency response range: 20-20kHz