Xiaomi Mi Bluetooth Earphone won IF Design award 2015.Adapted world-class brands - Japan Musashi paint, Xiaomi Mi Bluetooth earphone is anti-scratch and wearable , oil-resistant.Xiaomi Mi Bluetooth earphone upgrade from the chips and microphone , speaker and ear muffs . which reduce noise and restore the original sound. Adapted latest Bluetooth 4.1 technology , which is compatible with 4G network , Xiaomi Mi Bluetooth earphone can connect two smartphones at the same time .The light weight let you feel free and with 3 Pairs of medically Silicon ear muff you can enjoy the comfort brought by the xiaomi Mi Bluetooth earphone . Size: 5.6 cm * 1 cm × 0.8 cmWeight: 6.5 gColor: white models / black modelsBasic parametersModel: LYEJ01LMCharging time: 2 hoursStandby time: 180 hours (approximately one week)Talk time: 5 hoursCommunication distance: 10 metersBluetooth specification: V4.1 Bluetooth versionBluetooth protocol: HFP / A2DP / HSP / AVRCPPackage ContentsBluetooth headset * 1Ear cap * 3 (S, M, L three sizes)Charging cable * 1