Multifunctional One-key Operation
Turn on/off: Long press the multifunction of the Right earbud;
Answer the phone call: Short press; Reject a call: Double click;
Play/Pause the music: Short press the left earphones;
Skip to the next song: Short press the right earbuds
Bluetooth version: Bluetooth 5.0+ EDR /DLE
Bluetooth Profiles: HFP 1.7, HSP 1.2, A2D P1.3, AVCRP 1.6, SPP 1.2, PBAP 1.0
Charger Capacity: 800 mAh
Bluetooth Earbuds Battery: 50 mAh lithium polymer battery
Bluetooth Earbuds Play Time about 43 hours(Total, 5-7 hours playtime each for once fully charged)
Standby time: 360 hours
Operating Distance: 15M-20M
DC Output Voltage: DC 5 V DC; Charging Current(MAX): 1 A
Charging case: provide 8 times for every earphone after once fully charger; Charging Case Size: 2.6*2.8 inch/6.5*7 cm
1. Using 5V adapters for the case and wireless earphones charging, not use the fast wireless charger.
2. If the Bluetooth headphones have something wrong, reset the earbuds then try it again. Turn off the true wireless earbuds first, then long-press the button on both Bluetooth earphones for 15 seconds to reset the factory default settings, then put them into the charging case and pick them up, the ear headphones will automatically pair when you turn it on.
3. Red light is on when charging the earbuds in the case, and turns off when they are fully charged.
2* GEEKERA Bluetooth Wireless Mini Earphones;
2* USB Charging Cable (one for charging case, another one for earbuds);
1* Special Charging Case; 1* Pair Extra Silicone Ear tips; 1* User Manual;
QA1: >> How to pair the earbuds together?
If one earbud was used alone with the mobile phone, it will automatically be connected with the mobile phone next time defaultly. If you want to use both of them, need to take the step by the followings:
Firstly, make sure the charging case has full power, turn off the Bluetooth on your mobile phone (note: need to turn off the Bluetooth on your phone at first, then continue to do as follows)
Second, factory reset the earbuds(long-press the button on both sides for 15 seconds) then put both the earbuds into the charging case for 1-2 minutes, make sure they are charged in the case(note: this step is important). Third, take both of them out of the case for a while, until both of them are paired with each other(need to wait for both of them to have paired), then turn on the Bluetooth on your phone. Search "T21" to connect, then you can listen to your music with both at the same time.
QA2: >> What should I do if the wireless earbuds headphones can not charge?
hi, check all the USB cables of the earbuds are well connected, then reset the earbuds are ok: Take out one of the earphones and press the multifunction key for 4-5S until the light is off, that it means the earbud is turn off. Then continue to press the multifunction key for 14s until the red and blue lights alternately flash 4 times. At this time, take this earbud back to the charging case and press it down a bit( note: if not press down a bit, it will show the blue light, which means it hasn't well connected the base to charge), the red light will show on stably which means this earbud is recovered to charging normally. And operate another earbud as this method, it will be recovered to recharge also at the end.