It is compatible with Earbuds (1st & 2nd Generation), A2032, A2031 earbuds, and A1938 or A1602 charging case. It only includes the charging case. **Warm Tips: It is incompatible with Earbuds (3rd Generation)、(4th Generation) charging case: A2897, A2566, A3058 or A3059, or earbuds A1722/A1523, A2564/A2565, A3053/A3050, A3056/A3055. If you charge the charging case in advance, you can use it to charge the earbuds when you go out without a power supply. Please note that these earbuds (model numbers A2032, A2031) are only compatible with the Earbuds (2nd Generation) charging case (model number A1938). Quality: Used but good, OEM (original equipment manufacturer) standard, guarantees the same quality and performance as the original earbuds, and provides a reliable earphone solution. Pairing Instructions: 1. Forget your Earbuds from the Bluetooth list; 2. Plug the charging case with a power source; 3. Put in the new earbud and wait for 30-60 minutes; 4. Open the lid of the charging case; 5.Press and hold the setup button on the back of the case for about 15 seconds, until the status light on the front of the case flashes amber, then white; 6. Connect the earbuds to your phone. **If it does not work, please check if the models of the left and right earbuds match. 🏆 𝐀𝐦𝐚𝐳𝐨𝐧 𝐑𝐞𝐜𝐨𝐦𝐦𝐞𝐧𝐝𝐞𝐝 Package Content:
1 x A Charging Case for Earbuds (1st & 2nd Generation), A2031, A2032
Exclude the earbuds.
Condition: Used: Good.

**Please check the model of your earbuds before you place the order!

Pairing Instructions:
1. Forget your Earbuds from the Bluetooth list;
2. Plug the charging case with a power source; 
3. Put in the new earbud and wait for 30-60 minutes;
4. Open the lid of the charging case; 
5. Press and hold the setup button on the back of the case for about 15 seconds, until the status light on the front of the case flashes amber, then white;
6. Connect your phone to the Earbuds. **If it does not work, please charge it more times,e.g., a whole night. And please check if the model of the left and right earbuds matches. Please contact us if you have any pairing issues. **Need your patience for the pairing. It might take a longer time!!