BenchTech&reg; New Hbs-740 Necklace Universal Wireless Stereo Neckband Style Neck Earphone Handfree Vibration Bluetooth Headset Hbs-730 Upgrade for Apple, Iphone, Nokia, Htc, Samsung, Lg, Moto, Pc, Ipad, PSP (Black - Red)- with Free USB Bluetooth Transmitter Adapter With 1pcs Free USB Bluetooth Transmitter Adapter; Genuine HBS740 from BenchTech, beware of the fake from other seller Compatible with most cellphone and devices with bluetooth capabilities.High quality soud with HD speaker and enhanced BASS effect. CD quality sound with apt-X codex support. HD quality calls with VoLTE(voice over LTE) support. Comfortable,flexible and light neckband made of ultra-light shape memory alloy. Easy to handle ear set with magnetic properties. Voide announcer for SMS reader & pairing & battery status-Voice prompt function. Using the world famous brands CSR4.0 Bluetooth Stereo Bluetooth chips Extended battery life !-Talk/Standby/Music Play Time : Up to 15 / 500 / 10hours Charging time: &lt;2.0Hrs. Operation temperature: -10 to +60. Size: 17cm x 14cm - 6.69inch x 5.51inch.