X55 sleeping earbuds wireless headphones for work TWS Bluetooth earphone stereo hidden headsets with mic HD call waterproof

Details. mum frequency response: 45Hz. Maximum frequency response: 20000Hz. Sensitivity rating: 860b. Sports focused: Yes. Headphone feature: Built-in microphone. Headphone accessory type: earpads. Audio compatibility: Mobile. Earphones, headphones headset type: in ear. Model: X55 Bluetooth earphone. Material: Plastic. Product condition: New. Input voltage V): 5. Plug type: Cordless. With magnet: Yes. Battery capacity mAh): 300. Battery in the product: Yes. Battery quantity: 1. Description. Specification Bluetooth version: 5.0 Charging time: about 1.5 hours Battery capacity: earphone 35 mAh charging case 350 mAh transmission distance: 10 meters charging voltage: Dc5v/1A size: 6.5cm 4.5cm 2cm material: ABS quantity: The package includes: 1 Bluetooth headset 1 charging cable. 1 manual instruction. Details. mum Frequency Response: 45Hz. Maximum Frequency Response: 20000Hz. Sensitivity Rating: 860B. Sports Focused: Yes. Headphone Feature: Built-in Microphone. Headphone Accessory Type: Earp