Daioolor ZR100 True Wireless Earbuds with Microphone - Bluetooth 4.2 Truewireless Headphones High Sensitive Microphone, Ergonomic Ear-fitting Design - Comfortable Wearing. Staying in Charger Box to Keep Power for 20 days. Round Shape is Convenient to Handle in Hand and Put in Pocket and Travel Bag. Approximate Function and Quality like other USD45 wireless earphones but we just promoted at USD28 Attention: This is Not Water Proof! Wireless stereo, left and right channel separation, HIFI sound The headset has a complete Bluetooth headset function, can be used alone, can also be used in pairs Bluetooth 4.2, ultra low power CSR Scheme Bluetooth Band: 2.402GHZ-2.480GHZ Bluetooth Transmission Distance: 10 meters Built-in MIC Sensitivity: snr90-110db Battery Capacity: Left and Right headset both are 65mAh Charging base standard 500mAh Charging: Earphone magnetic suction special charging seat Continue to call or music according to the headset battery capacity is different, then 2.5 hours for double headset, 4 hours for single headset Standby time: 120 hours in one ear, two pairs of headphones for use at the same time for 60 hours Charging time: about 1 hours can be filled Can connect 2 mobile phones Built in noise cancellation technology Support Agreement: ADP1.3HFP1.6/HSP1.2/AVRCP1.6/D1.3 Apple Verified Manufacturing for iPad, iPhone, iPod. Formal Intellectual Property Registered in European Union, UK and U.S. ISO9001 Quality Control and ISO2008 Environment Certificated.