Features: - Bluetooth Version :JL 5.0 - Working Distance: 10m - Speaker: 40mm (Diameter) - Freq Range: 20-20000Hz - Battery Specs: 3.7V, 300mAh - Charging Time: 2 Hours - Impedance: 640 Ohm - Detachable Cable :3.5mm stereo & 1/4? Jack Adapter Specifications: - Weight: 1 kg - Dimensions: 40 × 30 × 8 cm What's in the box 1x Headset 2x Cables