Instruments/Tools Bluetooth tester, TF card, U disk, 3.5 audio cable, MICRO USB, Type-C data cable, DC power supply

item		Test conditions and methods	Test results
1	Bluetooth name	Use Bluetooth tester and speaker to automatically search for pairing connections and see if the name displayed on the Bluetooth tester is normal	Bluetooth Name: YK08
2	Power on \ Off	Power button Power on, off, indicator light, prompt tone is normal	Normal on and off, indicator and prompt tone
3	Bluetooth	Play music after the Bluetooth tester is paired with the speaker successfully, and test the key function: up and down music, volume increase and decrease, play/pause, pay attention to whether the sound has current sound, small sound, noise, broken sound, etc.	Connection successful, button function is normal
4	TF card	Use TF card to insert the speaker and play music, while testing the key functions: up, next, play/pause, volume increase and decrease, pay attention to whether the sound has current sound, small sound, noise, broken sound, etc.	Normal function
5	USB flash drive	Use the U disk to insert the speaker and play music, while testing the key function: up, next, play/pause, volume increase and decrease, pay attention to whether the sound has current sound, small sound, noise, broken sound, etc.	No function
6	Radio	Insert the charging cable to connect the speaker as an FM antenna, and near the window or leave the computer or charger and other equipment with large interference, press the play key to automatically search the radio and automatically save the radio, press the +/- key to retrieve the radio, and pay attention to whether there is current sound, small sound, noise, broken sound, etc.	No function
7	Call test	Enter the phone mode after pairing and connecting the Bluetooth tester with the speaker, align the microphone hole of the speaker, pay attention to monitor the output sound of the tester for noise, small sound, broken sound, etc. (Monitor the headset connected to the Bluetooth tester sound output)	No function
8	Key function	Power button: Long press for 3 seconds to start/long press for 3 seconds to shut down, long press for 8 seconds to reset (forced shutdown), short press to switch lights, double click mode switch (BT-TF card) Plus key: Short press to increase volume, long press to increase volume Minus key: short press to reduce volume, long press to continuously reduce volume Pause key: Music playback mode: Short press: play/pause, connection status: Connection Bluetooth status: Double click the next track, three clicks on the previous track, long press to disconnect Bluetooth	Keys function properly
9	Indicator light	1. Turn on the default white light breathing, connect Bluetooth automatically switch to dazzling light effect, turn off Bluetooth automatically switch to white light breathing 2. Colorful Breath 3. Yellow light breathing 4. Turn off lights	Prompt light and corresponding status normal
10	Battery display	Is the power symbol of the speaker displayed in the upper right corner of the machine, such as:	Battery display normal
11	One to two (TWS)	Any two speakers Bluetooth connection combination into a stereo speaker, and then connect Bluetooth test to play music at the same time, test key function synchronization, sound delay, host and slave distance does not exceed 6-8 meters, key function synchronization is normal, sound no delay	None normal
12	Call distance	Make and receive calls by successfully connecting the speaker with an iPhone in the room. The speaker is ≥10 meters directly facing the phone and ≥8 meters facing away from the phone.	Facing the phone ≥10 meters, facing the phone ≥8 meters, the sound is normal
13	Connection stability	Successfully connect the speaker with an Apple phone and play music in the room. In the straight line connection distance without obstacles, the connection distance is ≥10 meters, pay attention to listen to whether there is a pause, jamming and other phenomena	Connection distance ≥10 meters, music playback is normal
14	Charging test	Insert MICRO USB/Type-C 5V 1A charging cable to charge the speaker	Red light on charging
15	Full charge time	Charging the speaker with 5V 1A charger	3± About 0.5 hours/microphone 500 about 1.5± 0.5 H
16	Mono test	Test the music through Bluetooth or TF card, pay attention to the sound output: male voice, female voice	Sound channel test normal
17	Recording Test	Apple phone test/Android phone test, sing bar/Cool dog/national K song /QQ music	Normal function
18	Auto shutdown	Suspend playback after 10 minutes of disconnection between the speaker and the mobile phone. Watch whether the speaker will automatically shut down after 10 minutes.	Speaker static state 10 minutes automatic shutdown
19	Shutdown sleep current	DC3.7V, < 50uA	1uA/1uA
20	Charging voltage \ current	DC5V,< 1A/< 500mA	< 1000mA/< 500mA
21	Low Battery test	Boot connect Bluetooth /TF card /U disk, play songs to test whether there is a prompt/shutdown when the machine power is low.	Low voltage indicating normal
22	(PC mode)	Insert one end of the TPYE-C charging cable into the speaker and one end into the computer and open the computer music APP to play music, and test the key functions: up, next, play/pause, volume increase and decrease, pay attention to whether the sound has current sound, small sound, noise, broken sound, etc.	No function