Awei A799 Bl Foldable Wireless Gaming Headphones.

bluetooth version: v5.0 profile support: hfp, a2dp, avctp, avdtp, avrcp stand-by time: 100h talk time: 25h music play time: 14h charging time: 2h charging voltage: dc 5v frequency range: 2.402g-2.480g ambient tempearture: -20/+45oc transmission distance: 10m battery capacity: 500mah/3.7v driver unit: 40mm sensitivity: 122db±15% frequency response: 20-40000hz