magnetic headphones noise canceling cell phone earphones in-ear earbuds headsets mic v5.0 bluetooth wireless earphone for ip8 8s max samsung

specifications: 1. bluetooth version: v4.1 2. bluetooth distance: 10 meters 3. frequency range: 2.4ghz-2.48ghz 4. operating distance: up to 10m (space) 5. bluetooth profiles: a2dp, avrcp, hsp, hfp 6. standby time: up to 50hrs 7. working voltage: dc5v/130ma 8. charging: cable included (no adaptor) 9. battery: built in lithium polymer battery 10.talk/music playtime: approximately 2-4 hours 11. charging time: approximately 1-2 hours 12. frequency response: 20hz-20khz 13. operational temperature: -10 to 50°c package included: 1* headphone 1* charging cable 1* instruction manual 1* retail box notes: thank you and nice day