Mongeese F3 Open Wireless 〇 No box ・ Model: F3 ・ Bluetooth Standard: V5.3 ・ Earphone Music Playback/Talk Time: Approximately 5 hours ・ Earphone Charging Time: Approximately 1 hour ・ Charging Case Charging Time: Approximately 1.5 hours ・ Single Ear Weight: 4.5g ・ Charging Case Weight: 37g ・ Waterproof Performance: IPX5 ・ Color: Black Used for 1 month, used at home. No box or instruction manual! Connects and works without any problems. Thank you!