1. Earphones wireless specification: Wireless V4.2 WT for A2DP, AVRCP protocols support, therefore headset stream clear and continuous music and promise more stable signal.2. Transmission range is 10 meters, so you can enjoy music freely anytime and anywhere without the bound of wire.3. Charging voltage DC5V, charging time is about 2 hours. Talk time is 3.5 hours, music time is 3.5 hours, hence earphones boost you through any fitness activity. Standby time 80 hours.4. Listen longer and work harder with 80mAh of rechargeable battery capacity. Cable length is 60cm, speaker size 15mm, weight is only 12g. Compact and lightweight wireless earphones stream high-quality sound without tangled cords.5. Battery display supported for Apple phones and some Android phones to show the battery level of the headset on your iPhone, hence you will know exactly how much battery is left when paired with your device.6. Finally, headset convenient for your driving, cycling, working and those situations where your both hands are occupied.