Ozone-free  negative ionizer 
Built-in rechargeable lithium battery 
USB direct plug- in charging                               
This  Negative Ion Generator that uses a ozone-free ionizer to emit healthy negative ions into the air. By attaching themselves to air molecules and any impure particles in the air and negatively charge them, the emitted negative ions extremely purify the air and remove toxic substances including the dust, odors and molds.                                                              
1. Ozone-free ionizer emits abundant anions to effectively purify the air that enters your personal space. 
2. Silently directs clean air without any fan.
3. As an electronic mask to provide proper respiratory protection from airborne germs, allergens & odors.
4. Built-in rechargeable lithium battery lasts 8-hour continuous working. 
5. Suitable for crowded, air polluted and bacteria-spread places.                                 
*Negative ions output: >3 Million ions/cc                            
* Ozone concentrations: ≤ 0.02 ppm
* Available size: 3 m-20m                                                                     
* Operating temperature: -10~70 degrees
* Storage temperature: -20~80 degrees                                                                     *Power supply: Built-in Lithium Battery 3.7V/800mAh 
*Charging voltage: 5V DC (USB interface)                                
*Unit weight:190g
* Application: such as car, home, Office, recreation and leisure                                          Bluetooth Speaker features: 
A. hands-free calls

1. fixed to the instrument on stage and on the central hand, secure and practical

2. answer and hang up the phone

3. redial last number 4. built-in speaker

5. built-in microphone 6. you can adjust the volume level

7. DSP echo and eliminating noise processing technology.

8. full duplex communication technology 9. wind noise rejection

10. Bluetooth Adaptive frequency hopping technology

11. automatic connection 12. low standby power consumption

13. built-in rechargeable lithium-ion battery                                                                                                                                                                      
* Built-in high quality speaker: Bass diaphragm loudspeaker 4 Ohm 3W
* Bluetooth version: CSR3.0+EDR
* Frequency range: 2.4GHZ
* Mobile phones and hands-free connection distance: 0~10M
* MIC range call: 0~1M
* Charging voltage: DC5V
* Built-in Li-battery capacity: 800mAH
* Standby current: 0.3mA
* Standby time: up to 30 hours 
* Overall dimensions: ¢ 130*30 (h) mm
* Net weight: 160g
* Power supply: 5V external power supply
* Power consumption: ≤ 1 w