K21 Wireless Headphones Bluetooth Headset Ear Hooks Sport Earphone for Phone Handsfree Headphone with Charger Box Volume Control

Note: There are two options, one with a charging case and one without a charging case, please choose according to your needs.

Brand Name : USMAS Style : Ear Hook Certification : CE Vocalism Principle : Dynamic Origin : Mainland China Control Button : Yes Communication : Wireless Volume Control : Yes Sensitivity : 120±5bBdB Wireless Type : bluetooth Is wireless : Yes Line Length : Nonem Support APP : No Function : Common Headphone,For Mobile Phone,Sport Connectors : None Model Number : K21 Codecs : Apt-X Support Memory Card : No Resistance : 16ΩΩ With Microphone : Yes Model Number : K21 Ephone battery capacity : 300mAh Whether it can be worn around the ear : YES Charging battery capacity : 800 mah Bluetooth version : V5 Music time : 26hours Color : Black,White