This wire-less earphone adopts a new generation of BT5.0 version, which can provide clearer sound and more stable signal. Suitable for most BT-enabled devices, like for iOS/Android smartphones, etc. Easy to connect and use. Built-in Mic for convenient hands-free calls, and the ergonomic design delivers a comfortable wearing experience for you.Features:The BT Earphones adopt advanced BT5.0 version, providing clearer sound and more stable signal.Auto pairing, the two earphones will auto power on after taking out from the charging box and can connect with each other automatically.Both left and right earphone are completed with BT function, so the earphones can be used separately or used in pairs, satisfying your different using needs.Built-in microphone for hands-free call, providing much convenience to answer/hang up the call when driving, working or doing sports.Intelligent touching control, easy to play/pause music and answer/hang up the call.Mini in-ear style earphones, ergonomic design, comfortable for long time wearing.Comes with a charging box for conveniently charging the earphones, and it is a perfect storage case for protecting the earphones from dust and damage.Suitable for most BT-enabled devices, like for iOS/Android smartphones, etc. Easy to connect and use.Specifications:Color: Black, White, Red, Green (Optional)BT Version: V5.0+EDRBT Frequency: 2.4GHzEffective Operation Distance: 10-15M(No Obstacle)Supporting Agreement: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3Headphone Type: In-EarEarphone-battery(Each Earphone): 30mAh Polymer Lithium-batteryCharging-box-battery: 300mAh Rechargeable Lithium-batteryTalking/Music Time: about 2-3 Hours(Single Earphone); about 4 Hours(Two Earphones)Standby Time: about 60 Hours(Two Earphones)Item Size:* Earphone: 43 * 16mm / 1.69 * 0.63in* Charging Box: 54 * 43mm / 2.13 * 1.69inPackage Weight: 120g / 4.23ouncePackage Size: 102 * 102 * 35mm / 4.02 * 4.02 * 1.38inPackage List:1 * Pair of Earphones1 * Charging Box1 * Charging Cable1 * User Manual