Bluetooth Version: 5.0 Distance: 10 m / 33 ft Sensitivity: 98 dB Driver: 10 mm Playback Time: 3 - 4 Hours Battery Capacity: 60 mAh Frequency Response: 20 Hz – 20 kHz Packaging Dimensions in mm: 110 (w) x 180 (h) x 40 (d) Features and Benefits: Up to 4 Hours Playtime Bluetooth® Wireless Sports Hooks In-Line Remote Hands-Free Calling Sports Stabilizer Hooks What's in the box 1 x 'Volkano Epoch Series 1 x Bluetooth® Wireless Earphones 1 x USB Charging Cable 1 x Instruction Manual 1 x Carry Case 1 x Cable Length Adjuster 1 x Clip