Products Name: Speaker 001 specific 1. Power amplifier#8403, 3W 1pc 2. Trumpet: 4 3W2 3. USB wire length: 120MM 4. Frequency: 100hz18khz 5. Power voltage: USB5V 1A 6. SNR: 80db

Products Name: Speaker 002 Specific: 1. Power amplifier#8403 2. Trumpet: 4 3W2 3. USB wire length: 1.2M 4. Frequency: 100hz18khz 5. Power voltag

Products Name: Speaker 002 Specific: 1. Power amplifier#8403 2. Trumpet: 4 3W2 3. USB wire length: 1.2M 4. Frequency: 100hz18khz 5. Power voltage: USB5V 1A 6. SNR: 80db 7. Color box: 2

Products Name: Speaker 003 Specific: 1. Power amplifier#8403 2. Trumpet: 4 3W2 3. USB wire length: 1.2M 4. Frequency: 100hz18khz 5. Power voltage: USB5V 1A 6.

Products Name: Speaker 004 Specific 1. Power amplifier#8403 2. Main engine horn 4 "50 magnetic bass 2R. Vice - machine speaker 3 "40 magnetic 4R. 3. Power wire length:

Product NameSphygmomanometer  001 SPECIFIC: arm type electronic sphygmomanometer (English version) 1.0 ~ 299 mmHg;Pulse: 40~199 times/min 2. Measurement accuracy: pressure: less

Product NameSphygmomanometer  002 SPECIFIC: arm type electronic sphygmomanometer (English version) 1. Measurement range: pressure: 0~299 mmHg;Pulse: 40~199 times/min 2. Measureme

Product NameSphygmomanometer 002 SPECIFIC: arm type electronic sphygmomanometer (English version) 1. Measurement range: pressure: 0~299 mmHg;Pulse: 40~199 times/min 2. Measurement accuracy: pr

Product NameSphygmomanometer 002 SPECIFIC: arm type electronic sphygmomanometer (English version) 1. Measurement range: pressure: 0~299 mmHg;Pulse: 40~199 times/min 2. Measurement accuracy: pr