Features: •Ears Friendly •Long Time Listening •Hands Free Fashion Design •Suitable for Driving and Exercising •Quick & Easy Bluetooth Connection •Dynamic & Solid High Quality Sound Specifications: •Product Name: Armoured Robot Series Bluetooth Headset Wireless Ergonomic In-Ear Earbuds V4.1 Noise Insulated Mini Stereo Headphones with Microphone for Calls & MusiX •Chip: CSR •Bluetooth Version:V4.1 •Wireless Frequency:2.402-2.480GHz •Transmission Power: Class 2 •Bluetooth Distance: 10 meters •Power Supply: AC Input 110-240V DC Output 5V •Charging Time: About 3 hours;Charging Voltage: 3.7V •Talk Time:14 hours;Music Time: 13 hours; Standby Time:20 days;Working Current <12Ma •Smart Reminding: Support Voice Prompt;Support phone number report for incoming calls • Noise Reduction MIC: Professional silicone microphone for smartphones •Way of Wearing: In-Ear •Battery: 150mAh Rechargeable Lithium Battery •Dimensions: 65mm*25mm*10mm •Net Weight: About 12g •Color: Black What's in the Box: -1 x Bluetooth Headphone -1 x USB Cable -1 x Instruction Manual