LONGKO 5000mAh Power Bank 3-in-1 Bluetooth Headset V4.1 Noise Reduce BT Speaker for Phone Tablet Travel 1. Multi-purpose Almighty King- combined V4.1 Bluetooth Headset, BT Speaker and Power Bank into one, with 15m Barrier-free Transmission Distance and CVC 6.0 Noise Reduction that allows freely Stereo calls 2. Super Large 5000mAh Battery Capacity- 5V/2A high-speed output with over charge protection, as a power bank to charge an iPhone6/6S 2 times, Samsung S6 once, or other USB-powered devices such as Sony/LG/HTC cellphones, iPad, iPod/MP3/MP4, etc 3. Never Powered OFF- with built-in magnetic storage dock for smart charging and headset storing, the BT headset can be automatically charged when putting on the base and never powered off as long as the base has power 4.Stronger Configuration- adopted CSR 4.1 chip, high sensitive Mic and 12mm Dynamic speaker, the headset has large volume and high quality, it also report the number of an incoming call in wearing 5.Compact Size But Great Function: it's almost the same size as iPhone 6, made of PU leather and aluminum alloy materials, durable and lightweight. Equipped with functions of Redial, Auto BT Re-connect and 2 mobile phones connection, convenient and practical