Wireless Bluetooth Stereo Earphones V4.2

• Brand Name: Amterbest
• Wireless Type: Bluetooth
• Plug type: Wireless
• Function: For Mobile Phone, For Video Game, Monitor Headphone, HiFi Headphone, For iPod, Sport
• Waterproof: No
• Communication: Wireless
• Active Noise-Cancellation: Yes
• Memory Card Support: No
• Frequency response range: 8 - 24000 Hz
• Vocalism Principle: Hybrid technology
• APP support: No
• Model Number: i7s Bluetooth Earphone
• Style: Ear hook
• With Microphone:Yes
• Connectors: USB
• Apt support - x: No
• Sensitivity:122 ± 3dB
• Resistance: 9Ω
• Volume control: No
• Command button: Yes

• Drive: 15mm 
• Impedance: 32 OHM 
• Bluetooth version: Bluetooth v4.1 + EDR 
• Bluetooth use band: 2.4GHz 
• Power level: CLASS II 
• Output power: 30mW 
• Bluetooth distance: 10 meters barrier 
• Frequency response: 20-20000Hz 
• Operating voltage range: 3.0V-4.2V 
• Sensitivity: -42dB 
• With A2DP / AVRCP high quality stereo audio transmission and remote control protocol 
• Powerful noise de-noising circuit (active noise reduction) 
• Switch between Chinese and English (boot does not connect Bluetooth state, press the switch 2 times, hear the tone switch successfully) 
• Charging time about 1 hour (power indicator charging: red light, full power: red light off (blue light).) 
• Product Size: Length 25MM. Width 15MM. High 35mm 
• Product net weight of about 5g 
• Talk time is about 4-5 hours(with charger box)
• Talk time is about 1.2 hours (USE ALONE):
• Music time about 4-5 hours(with charger box)
• Music time about 1 hours(USE ALONE)
• Standby time is about 100 hours
• The charging time is about 60 minutes
• Battery capacity 60MAH 
• Charging power: DC5V power supply [round hole interface] (computer USB port, mobile phone charger, car charger) 
• Compatible phone: compatible with Android,iPhone, iPad, Microsoft, Saipan system with 99% of the Bluetooth mobile phone

Package Includes:

• 1pc i7 Bluetooth earphone
• 1pc Charger box
• 1pc Charging USB Cable 
• 1pc User Manual