The YYK-530 is an ultra-lightweight headset with V5.3 wireless and an LED power display. - Model Name: YYK-530 - Wireless Version: V5.3 - LED Power Display: Yes - Ultra-lightweight: Yes - Talk Time: 10-12 hours - Music Playback Time: 10-12 hours - Standby Time: Approximately 180 hours - Charging Case Charging Time: Approximately 1.5 hours Thank you for viewing. This is a brand new, unopened item. I will ship it as quickly as possible. It is also listed on other flea market sites, so it may be removed without notice. Thank you.