Compatible: Compatible with 99% of Bluetooth devices ,smart phone, Bluetooth-enabled Tablets etc; the Wireless Range up to 10 meters. LONG BULK LIFE BATTERY WITH PORTABLE CHARGER Built in 65 mAh lithium polymer battery, enjoy up to play time about 1.5 hours of Full Charge, up to 100 hours of time waiting period. The 300 mAh charging case can fully recharge the bluetooth headset 1-2 times Latest Bluetooth Wireless Technology 4.2 with A2DP / AVRCP support, ensure strong signal transmission at high speed and offering high quality stereo music, make you relax in the world of music easier. You can share this with the people around you. Noise Canceling CVC6.0 and High-Sensitivity Microphone: Built-in CVC6.0 noise canceling technology and high sensitivity of the microphone to reduce noise, allowing clearer microphone sound. you can get high quality hands-free talk over the phone anywhere Description: listening to the song correct, support songs and then call, For iPhone power display,you can always watch the headset power situation, do not worry about the headset no electricity to makey ourlife worry; One to two connections ,can be connected to two mobilephones; Bluetooth headset everytime connected to the phone after the shutdown,and then open the Bluetooth headset will automatically connect back to the phone, butal so more convenient; Intelligent compatibility:support all with Bluetooth mobilephone,tablet,notebook,singingit,QQmusic,movies,etc.,allthemobilephone; Drive: 15mm Impedance: 32OHM Bluetooth version: Bluetoothv4.1+EDR Bluetooth use band: 2.4GHz Power level: CLASSII Output power: 30mW Bluetooth distance: 10meters barrier Frequency response: 20-20000Hz Operating voltage range: 3.0V-4.2V Mitou sensitivity: -42dB With A2DP/AVRCP high quality stereo audio transmission and remote control protocol Powerful noise de-noising circuit(activenoisereduction) switch between Chinese and English(boot does not connect Bluetooth state, press theswitch2times,hear the tone switch successfully) Charging time about 1hour (power indicator charging: redlight, fullpower: redlight off (bluelight).) Product Size:Length2cm.Width1.7cm.High4.5cm Product net weight of about 5g Talk time is about 4-5 hours（with charger box) Talk time is about 1.2 hours (USE ALONE)​: music time about 2-3 hours（with charger box) music time about 1hours（USE ALONE) Standby time is about 100 hours The charging time is about 60 minutes Battery capacity 60 MAH Charging power:DC5V powersupply [roundholeinterface] (computerUSBport,mobilephonecharger,carcharger) Compatible phone: compatible with Andrews, Apple, Microsoft, Saipan system with 99%of the Bluetooth mobilephone Brand TWS Earbuds SKU 100281841_NP-1020552233 connector_1 3.5MM Wearing type In-Ear wireless_connectivity Bluetooth Model i9s-TWS