Item Type: Earphone Condition: 100% brand new Color: Black Solution: For CCIH 5.0 Control: Button Battery: Single earphone 50mAh, charging box 300mah polymer lithium battery Using Time: 3.5-4 hours Charging Times by the Charging Box: 2-3 Effective Distance: More than 10m/33ft Bluetooth Version: V5.0 Frequency Response Range: 20Hz-20kHz Speaker: 10mm Impedance: 32 Charging Bay Size: Approx. 38x70mm/1.5x2.8in Single Earphone Size: Approx. 20x24x14mm/0.8x0.9x0.6in (as shown) Package List 1 x Charging Bay 2 x Earbuds 4 x Ear Caps 1 x Charging Cable 1 x English User Manual 1Binaural calls, HIFI sound, advanced decoding technology for reducing the sound loss in transmission. 2Professional tuning for rich, mellow and delicate sound quality, better music experience. 3Automatic on and pairing, CVC 8.0 high noise reduction, great sound quality. 4One-key control, 300mAh charging box, 10m/33ft transmission distance, stable and continuous. 5The two earbuds can be used together or as two separate headphones at your will. 6Ergonomic in-ear design for reducing the pressure, more comfortable to wear. 7Adopt intelligent magnetic charging mode, just put on for charging, easy to use.