This Fineblue LV-6 ?Sports Bluetooth earphone is very suitable for running￡? climbing mountains￡?jogging etc. It is sweatproof so that sweat won't get into the headphone even if you are sweaty.Its ring neck hanging type￡?reducing the pressure and pull force on the ears and head of traditional headphones.The ear cap is extremely soft￡?very comfortable to wear. And the length is reduced by 4 cm￡? it is not wrapping around the neck￡? which save you from the trouble of wire entanglement while exercising. It's a really good buying. <br> <br> <strong>Features:</strong> <br> Bluetooth V4.0 + EDR standard￡? high fidelity sound quality.? <br> With microphone￡? you can operate on it to answer/reject phone calls￡? or listen music anytime and anywhere. <br> Multi-point technology￡? you can connect two cellphones at the same time￡? and it supports switch between calls. <br> Compatible with Bluetooth enabled devices￡? such as for iPhone￡? iPad￡? HTC￡? Lenovo￡? Samsung￡? Tablet PC￡? and etc. <br> Lightweight design for comfortable fit. <br> Build-in rechargeable li-battery￡? charging via USB cable about 2 hours. <br> <br> <strong>Specifications:</strong> <br> Bluetooth: V4.0 <br> Chip: CSR <br> Operating distance: 10m <br> Battery capacity: 60mAh <br> Music play: 4 hours <br> Talk time: 4 hours <br> Standby time: 100 hours <br> Charging time: ￡? 1 hours <br> Skip song: Support <br> Voice prompt: Support <br> Color: Black￡? White <br> Frequency range: 2402 ~ 2480 MHZ <br> Sensitivity: -80 dbm <br> Frequency response: 20 ~ 20 KHz <br> Signal to noise ratio: ￡? 80 dbm <br> Horn output power: 2 * 10 mv <br> Package size: 18 * 10 * 8 cm / 7.1 * 4 * 3.1 in <br> Package weight: 118 g / 4.2 oz <br> <br> <strong>Package List:</strong> <br> 1 * Earphone <br> 2 * Earmuff <br> 1 * USB Charging Cable <br> 1 * English User Manual