Amazon.com: Neckband Bluetooth Headphones Speaker 2 in 1Wireless RKSTN Bluetooth Headphones Neckband Bluetooth Headphones,HD Stereo Neckband Headset Bluetooth Headset Wireless Neckband Fast Charge In Neckband bluetooth headphones sound quality tripsose Black Bluetooth Neckband Headset, 10 Hours, Mobile at 180 piece in. Plug Type: Wireless Function: For Mobile Phone,Sport Support APP: No Line Length: None Communication: Wireless Volume Control: Yes Frequency Response Range: 20 16000Hz Support Memory Card: No Waterproof: Yes Style: Neckband Vocalism Principle: Dynamic Is wireless: Yes Connectors: USB Support Apt x: Yes With Microphone: Yes Control Button: Yes Sensitivity: 96dB Resistance: 32 Wireless Type: Bluetooth Color: Black Play Talk time: up 10 hours Operating Range: up to 10 meters Compatible with: All Bluetooth smartphones (for iPhone, Android) Bluetooth Version: V4. 1 Time to market: 2017