JBL Tune 230NC True Wireless Noise Canceling Headphones Four Colors

https://live.staticflickr.com/65535/52866685671_34721b9b52_z.jpg feature: Excellent JBL Pure Bass Sound Lightweight and long design, comfortable and stress-free to wear Enjoy every rhythm with 6mm driver unit Active Noise Cancellation and Intelligent Ambient Awareness 4 microphones make calls always perfectly clear IPX4 waterproof level, not affected by weather Support fast charging, total battery life up to 40 hours Exclusive APP to create your own music space General agent of JBL headphones Product Specifications: Bluetooth version: 5.2 Driver unit: 6mm Weight per ear: 5.1 g Charging case weight: 47.3 g Headphone battery type: lithium-ion battery (70 mAh / 3.85V ) Charging box battery type: rechargeable lithium battery (750 mAh/3.7V) Charging time: 2 hours from empty Frequency range: 20Hz-22kHz Sensitivity: 105dB SPL@1kHz Nominal Impedance: 16 ohms Maximum sound pressure level: 95dB Microphone Sensitivity: -38dBV/Pa @1kHz Maximum music playback time with ANC off 10 hours Maximum music playback time with ANC on 8 hours Packaging and accessories: Headphone x 1 Headphone charging box x 1 USB Type-C charging cable x 1 3 sizes earplugs x1 Quick Start Guide x1