Specifications:The battery can be cycled and listened for hundreds of times. The basic loss is very small.Match with bluetooth-compatible smart phones on the market.Enjoy 6 hours of uninterrupted music playback (30-40% volume).2 in 1 function, can connect two mobile phones at the same time.Real-time battery voltage monitoring, low voltage warning, ultra-low voltage automatic shutdown protection.Support English call number and voice prompts.Type: Q1 bluetooth-compatible EarphoneMaterial: ABSBluetooth: 4.1Battery Capacity: 60 mAPower Supply: Lithium Battery (Included)Sound Channel: StereoTransmission Range: 10mOperation Method: In-EarCharging Time: about 90MinMusic Time: about 6HoursTalk Time: about 10HoursStandby Time: about 20DaysFeatures: Phone Accessory, In Ear, Mini SizeNote: Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.User Instructions:1. Connection: Long press the multi-function key for three seconds, when there is a blue light flashing, that means the earphone is ready to be matched. Then open your smart phone and search signal X7. The blue light will be off when you connect sucessfully.If you want to connect to two devices at the same time, you just need to repeat the above operation.2. Music Playing: You can have the music paused and playing by pressing the only key on the earphone, when there is a phone call, the music will stop automatically.3. Hands-free Phone Calls: You can press the key to anwer or hang up a phone call.4. Re-dailing Function: Double press the key, the earphone will call the latest number that called you before automatically.5. Language Switching(Engligh/Chiness): Slightly press the key for two seconds(not into bluetooth-compatible pattern), at this moment, the earphone will remind you by voice prompt. If the voice prompt is not in English, you can then press the key for two seconds, and it will switch into English for you.6. Voice Prompt: Under power on/off, bluetooth-compatible connects these three patterns, there will be always voice prompt for you.7. Battery Situation: On ios system, you can check the power on your smart device. Besides, the earphone will remind you when it tend to be low power. The blue flash light will be on during charging, and it will be off when the battery is full.Package Includes:1 x Q1 bluetooth-compatible Earphone(Phone Not Included)1 x USB Charging Cable1 x Ear Cap1 x User Manual