Used with box and all items from original purchase. Fully functioning, no issues. Category: Headphones Condition: Used Brand: Harman Kardon Model: AKG N400 Features: Active Noise Cancellation Color: Navy Wireless Technology: Bluetooth Bluetooth: 5.0 Weight (Case): 2.3oz / 65 g Active Noise Canceling:YES Weight (Earbud):0.27oz / 7.7 g Form Factor: In-Ear Only Audio codec format: AAC, SBC Battery capacity (Case):220 mA / 3.7 V Frequency response: 10 Hz-20 kHz Waterproof rating: IPX7 Driver Size: 8.2 mm high sensitivity driver Bluetooth profiles: HFP V1.6, A2DP V1.3, AVRCP V1.5 Charging time: 2 hours control: Touch control Component 1: Harman AKG N400,Earbuds,ear tips, Type: Canal Earbud (In Ear Canal) Sensitivity: 96 dBSPL / 1 mW @ 1kHz Component 3: Quick Start Guide (QSG),warranty card Component 2: wing tip,USB-C charging cable,Case Battery capacity (Earbud): 55 mA / 3.7 V Connectivity: Bluetooth Impedance: 16 ohm