Description: The earphone features a volume control technology ensures the sound is within levels recommended safe for kids. This headphone can be folded, compact design fits perfectly in your bag or backpack. The headphone works with smartphones, tablets and even computers. The earphone comes with a 3.5mm audio port, so you can use it as a wired earphone as well. This wireless headphone features a 5.0 version. The connection is stable and fast. Specifications: Color: Show as picture. Size: Show as picture. Bluetooth-compatible Version: 5.0. Support Profile: Support:HFP/HSP/A2DP/AVRCP/APTX. Working Distance Range: 10m. Battery: 400mAh,Lithium-ion battery.( for Built-in) Charging Voltage: 5V/200mA. Charging Time: About 1hrs. Standby time: 180 hours. Talking/Music Time: LED lights turn on for about 7hrs/turn off for about 10hrs. Impedance: 32Ω. Sensitivity: 105±13db. Noise Reduction: CVC6.0. Note: There might be a bit color distortions due to different computer resolutions. There might be a slight errors due to different hand measurement. Package included: 1x headphone.(Battery for built-in) 1x USB charging cable. 1x Audio cable. 1x User manual. The earphone features a volume control technology ensures the sound is within levels recommended safe for kids This headphone can be folded, compact design fits perfectly in your bag or backpack The headphone works with smartphones, tablets and even computers The earphone comes with a 3.5mm audio port, so you can use it as a wired earphone as well This wireless headphone features a 5.0 version. The connection is stable and fast