Chipset : CSR8615,V4.1
Frequency : 2.4GHz, Class 2
Size(mm) : 94.5*32*24.5 MM
bare weight : 43g
Weight : 143g
Bluetooth version : V4.1（HFP1.6、HSP、CVC6.0、HD Voice、Voice Prompts、A2DP、AVRCP、IOS BATTERY STATE MONITOR、Voice reporting、Multipoint）
Call time : 4H
Standby time : 90H
Music time : 3H
Microphone : 4015
Speaker : φ10MM
Battery : Lithium Polymer 40mAh
LED Indicator : YES/red、blue
KEY : YES/MFB KEY
Vehicle charging input voltage : DC 12-24V
Vehicle charging output voltage : DC 5V 2.1A

• Multi-Function Design: Smart Single Port USB Quick Car Charger+ Wireless Bluetooth Headphones (Vehicle Mounted car Charger + Mini Bluetooth in-ear Headphone).
• Fast Charging:Quickly Charge & Simply Use , Simply plug the car charge into the slot and connect a USB cable to charge and sync your phone. When you done using the Bluetooth earbud, just need to place it back into the car charger top.2.1 A fast smart charging. Start charging when the car start, stop charging when the car stop. charging all the time with full power.
• When the vehicle-mounted charger is used to charge the headset, the LED indicator turns red. After the headset is fully charged, the LED indictor turns blue. The charger is designed with the over-current protection and short-circuit protection functions, which ensure that the charger outputs a safe, stable, and powerful current without damaging devices.
• Safe For Driving: Hands free technologe,no more talking on your phone while driving, its best for all of us. Simple remove the Bluetooth earpiece from the top of the car charger and sync it with your phone to talk while driving safely. When your done using the Bluetooth earpiece, place it back into the car charger top.
• Great Compatibility: Free access to most Bluetooth devices, such as iPhone 6s Plus / 6s, iPhone 6 Plus / 6, iPhone 5s / 5, iPhone 4s /4 , iPad Air / iPad Mini; Samsung Galaxy S6 Edge Plus / S6 Edge / S6 / S5, Note 5/ 4 /3 /2, Samsung Tablets ; HTC A9 / M9 / M8 / M7 ; Google Nexus 6P, etc.

Multi-Function Design: Smart Single Port USB Quick Car Charger+ Wireless Bluetooth Headphones (Vehicle Mounted car Charger + Mini Bluetooth in-ear Headphone).EMISH