Soundcore by Anker Q20i Hybrid ANC Headphones, Wireless Over-Ear Bluetooth, 40H Long ANC Playtime, Hi-Res Audio, Big Bass, Customize via an App, Transparency Mode, Ideal for Travel-A3004

Hybrid Active Noise Cancelling: 2 internal and 2 external mics work in tandem to detect external noise and effectively reduce up to 90% of it, such as planes and car engines.Note: ANC mode is not compatible with an AUX cableNote: ANC mode is not compatible with an AUX cable. According to regulations, the maximum volume of headphones should not exceed 100dB. In order to protect your hearing, Q20i's maximum volume has been set to 95dB. It is recommended that you do not listen to excessively loud volumes for long periods of time.Specifications are subject to change without notice.Input: 5 V 0.75 ARated output power:2.5 mWBattery capacity:800 mAhCharging time: 90 minutesPlaytime (with ANC off) Up to 60 hoursPlaytime (with ANC on) Up to 40 hoursDriver size 40 mmFrequency response: 20 Hz - 20 kHzImpedance:16 ΩBluetooth version: 5.0Bluetooth range:10 m / 32.8 ftHow do I pair my soundcore Q20i headphones?1. Press and hold the "Power On" button for 5s to enter into pairing mode directly after the headphones are turned off. 2. Press and hold the "Power On" button for 1s-3s until you hear the boot up tone. The headphones will automatically reconnect to the last device. if the headphones do not reconnect to the last device after continuously sending a reconnection signal for 5s, it will enter pairing mode again. 3. Once the headphones are paired with a device already, if you want to pair this headphones with another device please manually disconnect the current connection of the device, then the headphones will automatically enter into pairing mode, and you can start pairing again. 4. Connecting to a second device: After double-clicking the switch button, the current connected device will not be disconnected and the headphones will re-enter into pairing mode where a second device can search for and connect to the headphones. 5. The factory default is to automatically enter the pairing mode when the device is turned on.How do I reconnect my soundcore Q20i headphones?Press and hold the "Power On" button for 1s-3s until you hear the boot up tone, and the headphones will automatically reconnect to the last device. If the headphones do not reconnect to the last device after continuously sending a reconnection signal for 5s, it will enter into pairing mode again.Why can I still hear voices when using noise cancelling mode?Our noise canceling mainly eliminates low-frequency noise, such as the roar of machines, the sound of air-conditioning units, etc., and the elimination of human voice is weak, so sometimes it will not effectively reduce the noise of human voices.Why are voices quiet when using transparency mode?The Transparency mode for the Q20i is designed to allow low, natural external sound. When there is no/low sound input to the headphones voices can be heard clearly to ensure there is no need to remove the headphones.How long does it take to fully charge?About 2 hours in an indoor environment. Please note the headphones will not charge in an environment below 0°C.What is the battery life?40H (Bluetooth+ANC ON) 60H (Bluetooth+ANC OFF) The headphones will play for 4 hours on a 10 minute charge. Please note: 1. The above result is based on tests conducted at 50% volume with 3 songs looped to playback. 2. Different environments and different music will affect the play time.