Feature: Single Ear Bluetooth Earphone High fidelity sound and voice quality effect Can talk casually while driving / working or walking Transmission distance: 10 mt Bluetooth Version: V4.1 Talk time: about 5-6 hours Standby time: over 168 hours Charging time: about 1-2 hours Specification: Plug Type: Wireless Function: For mobile phone, for video game, hi-fi headphones, for iPod, sports, headphones Wireless Type: Bluetooth Model Number: Mini Bluetooth Earphone Waterproof: no Communication: Wireless Active noise cancellation: Yes Support Memory Card: No. Is wireless: Yes Support APP: No Sensitivity: 120 ± 3dB Style: earhook Line length: None With microphone: Yes Resistance: 32 Ω Connections: USB Support Apt-X: No. Volume control: Yes Frequency range: 20-20000Hz Vocal principle: Dynamic Control button: YesStyle:In-EarCommunication:WirelessFunction:For Mobile PhonePlug Type:WirelessFrequency Response Range:8-25000Hz--Line Length:None--Resistance:9ΩModel Number:22Connectors:NoneSensitivity:123dBWireless Type:BluetoothVocalism Principle:DynamicWaterproof:NoSupport Memory Card:NoSupport APP:NoIs wireless:YesWith Microphone:NoControl Button:YesVolume Control:YesActive Noise-Cancellation:No Include: 1 x Wireless Bluetooth Earphone 1 x Ear hook 1 x USB charger cable 1 x User Manual