HCQWBING M165 Bluetooth 4.1 Headset Ultralight Wireless Earphone Hands-free Earloop Earbuds Sports Music Earpieces IOS AndroidSpecifications:Bluetooth Version 4.1; profiles include Advanced Audio Distribution (A2DP), Hands-free (HFP), Headset (HSP) Talk time:Up to 7 hours Standby time:Up to 11 days DeepSleep:Extends battery readiness up to 180 days Weight:7g Interface:USB Type of battery: rechargeable, non-replaceable lithium battery  Features:1.High quality and noise canceling bluetooth headset.Dual microphones reduce noise and wind for clear, crisp call quality while in the office or at the gym.You can take this tiny Bluetooth earpiece anywhere.2.Long lasting battery life.Battery lasts for over 7 hours of talk time and features DeepSleep power-saving mode when away from your phone.3.Comfortable fit. Lightweight design with a comfortable ear tip that conforms to the shape of either ear for a stable fit.4.GET FULL STEREO IMMERSIVE BASS MUSIC SOUND QUALITY: Gives you the freedom to take your music anywhere,bringing out the depth and clarity of your music.5.Easy to use.Compatible with most Bluetooth enabled devices, such as Apple iPhone, Android Samsung, etc., pairing up just take a few seconds.NOTE:you can let the headset connect with two bluetooth device at the same time and answer the phone of any one device.  Package: 1*Bluetooth headset 1*USB charging cable 1*User manual