Cable Length Adjuster: Any extra earphone cable wire can be clamped using this nifty accessory, allowing you an optimal fit. Earbud Caps: Small, medium and large caps are included; you can choose whichever gives you the best fit. In-Line Remote: You can easily adjust the volume, skip tracks, play, pause, answer calls and activate Siri or Google Assistant using the in-line remote. Hard Carry Case: Store your earphones, charging cable and spare earbud caps in the hard EVA case included. Compatible with Siri and Google Assistant. Specifications: Bluetooth Operating Distance: 10 m Chipset: BK Bluetooth Version: 4.2 Bluetooth Profiles: HFP, HSP, A2DP, AVRCP Playback Time: 4 – 6 hrs Battery Capacity: 80 mAh Charge Time: 2 hrs Impedance: 16 ? Sensitivity: 98 dB Driver:10 mm ICASA: TA-2017/2436 Power Requirement: 5V DC , 1A Frequency Response: 20 Hz – 20 kHz What's in the box 1 x Earphones