Description :
 
J21S Multifunctional Bluetooth Speaker Phone Wireless Charger DIY Alarm Clock Music Record FM Radio
 
- Multifunctional
Mobile Phone Wireless Charging; DIY Alarm Recording; AUX Audio Input; Custom Double Alarm Clock; FM Radio Mode;4.2 Bluetooth Connection; TF/USB Playback.
 
- Natural Soundtrack
Dual speakers + double bass diaphragm, 4D surround, 360° uniform sound field, very powerful sound.
 
- Double Alarm Mode
DIY personality recording alarm, 2 groups of alarms to choose, snooze mode selection.
 
- Automatic Connection
Specification :
  
Package Includes :
 
1 x Multifunctional Bluetooth Speaker
1 x USB Cord
J21S Multifunctional Bluetooth Speaker Phone Wireless Charger DIY Alarm Clock Music Record FM Radio
- Multifunctional
Mobile Phone Wireless Charging; DIY Alarm Recording; AUX Audio Input; Custom Double Alarm Clock; FM Radio Mode;4.2 Bluetooth Connection; TF/USB Playback.
- Natural Soundtrack
Dual speakers + double bass diaphragm, 4D surround, 360° uniform sound field, very powerful sound.
- Double Alarm Mode
DIY personality recording alarm, 2 groups of alarms to choose, snooze mode selection.
- Automatic Connection
10 meter stable Bluetooth connection, Bluetooth version 4.2, Bluetooth connection is fast, stable, and far away.
  
- Bluetooth 4.2 Chip
4.2 Bluetooth wireless connection, the connection range is more than 10 meters, the signal is stable, the compatibility is strong, suitable for most Bluetooth devices.
  
- FM Radio Function
Short press "M" to switch the radio mode and listen to your favorite radio shows at any time.
  
- Durable And Safer
Built-in high-performance 18650 battery, large battery capacity, strong voltage adaptability, stable performance, with advanced circuit board, the capacitance is not easy to attenuate.
- Bluetooth 4.2 Chip
4.2 Bluetooth wireless connection, the connection range is more than 10 meters, the signal is stable, the compatibility is strong, suitable for most Bluetooth devices.
- FM Radio Function
Short press "M" to switch the radio mode and listen to your favorite radio shows at any time.
- Durable And Safer
Built-in high-performance 18650 battery, large battery capacity, strong voltage adaptability, stable performance, with advanced circuit board, the capacitance is not easy to attenuate.
Specification :
| Model | J21S | 
| Material | ABS | 
| Color | Black / White | 
| Weight | 960g | 
| Size | 177 x 86 x 70mm | 
| Interface Type | USB | 
| Battery Capacity | 2000 mAh | 
| Frequency Range | 100HZ-20KHZ | 
| Output | DC 12V | 
| Signal to Noise Ratio | ≥80dB | 
| Extended Storage | 32GB | 
| Bluetooth Protocol | 4.0 | 
| Play Format | MP3 | 
| Effective Distance | 10M | 
| Charging Sensing Distance | ≤ 3 mm | 
| Support Format | TF Card | 
| Audio Input Mode | Bluetooth / AUX / TF / U Disk | 
| Speaker | 52MM | 
| Charging Output | 5W / 7.5W / 10W (MAX) | 
| Working Power | 7.4V 18650 Battery | 
| Working Environment | -10℃ ~ 50℃ | 
| Bluetooth Linkage Distance | ≥10M | 
Package Includes :
1 x Multifunctional Bluetooth Speaker
1 x USB Cord

