Main Features‎:‎Rock MuO Bluetooth sport in‎-ear earbuds for people who loves music and sportLP record design with 3D CD texture and detailed craftsmanship‎,‎ the in‎-line control can be used an exquisite pendantBluetooth 4.0 technology minimizes sound loss with stable transmission efficiencyIt delivers uncompromising HiFi sound‎,‎ deep bass‎,‎ mellow middle and crisp high‎,‎ gives you an acoustic feastClear and melodious sound is conveyed by high quality 9mm acoustic driver and high‎-end titanized diaphragmAviation aluminum alloy housing and polishing process sophisticated workmanship creates the stylish earbudsIntegrated drive‎-wire‎-by‎,‎ support hands‎-free calls‎,‎ song switch‎,‎ volume control‎,‎ snapshot Brand‎:‎ Rock Model‎:‎ MuO Wearing type‎:‎ In‎-Ear Function‎:‎ Answering Phone‎,‎Bluetooth‎,‎HiFi‎,‎Microphone‎,‎Song Switching Connectivity ‎:‎ Wireless Connecting interface‎:‎ Micro USB Application‎:‎ Mobile phone Driver unit‎:‎ 9mm Frequency response‎:‎ 20HZ‎-22KHZ Impedance‎:‎ 32ohms Sensitivity‎:‎ 110 dB Talk time‎:‎ 3 ‎- 4h Music Time‎:‎ 3.5 ‎- 4h Standby time‎:‎ 45 ‎- 60h Micphone Sensitivity‎:‎ ‎-42db±3db Bluetooth‎:‎ Yes Bluetooth version‎:‎ V4.0 Bluetooth distance‎:‎ W/O obstacles 10m Bluetooth protocol‎:‎ A2DP‎,‎AVRCP‎,‎HFP‎,‎HSP Bluetooth mode‎:‎ Hands free Battery Capacity‎(‎mAh‎)‎‎:‎ 100mAh Package weight‎:‎ 0.107 kg Product size ‎(‎L x W x H‎)‎‎:‎ 44.00 x 3.10 x 1.20 cm / 17.32 x 1.22 x 0.47 inches Package size ‎(‎L x W x H‎)‎‎:‎ 19.00 x 11.00 x 3.50 cm / 7.48 x 4.33 x 1.38 inches Package Contents‎:‎ 1 x Bluetooth Sport Earbuds‎,‎ 1 x Charging Cable‎,‎ 2 x Small Size Earbud Tips‎,‎ 2 x Large Size Earbud Tips