2020 Headphones wireless Bluetooth earphones and headphones for girls sport and SD CARD with microphone HIFI STEREO headset in the phone

specification: Material: plastic, metal Color: blue, green, orange, red, rose red Functional use: wireless headset, voice headset Bluetooth version: V4.0 Bluetooth mode support: A2DP 1.2, AVRCP 1.0, HSP, HSF 1.5 Frequency: 2.402-2.480ghz, 2.4G ISM band RF performance: receiving Sensitivity: -84dbm Transmit power: up to 4dBm. Frequency response: 20Hz-20KHz Signal to Noise Ratio (SNR): 70Db Total harmonic distortion rate (THD): 0.1% Power indicator: blue light Headphone charging: rechargeable 400MAH lithium battery Charging port: mini 5-pin USB charging port Normal charging time: approx. 2.5 hours Talk time: up to 10 hours Standby length: up to 250 hours working temperature: -20 ° C -55 ° C Wearing method: head-mounted Uses: game audio headphones, TV headphones, ordinary headphones feature: HD sound. Stylish design. The sound quality is great. Easy to use. Low power consumption Foldable for easy carrying. Ergonomically designed for a comfortable head. Package Contents: 1 earphone 1*USB charging cable 1* instruction manual