Model Number: BSPK-J5-S5I-J Brand Name: Tonstep Key Specifications/Special Features: Waterproof Bluetooth Speaker with 4000mah power bankWater resistance:IPX3Support bluetooth / hands free / Power bank functionBluetooth version: V3.0 + EDRBluetooth range :10-20mBuit in battery capacity: 4000 mahMusic playing time：10HOutput power: 4Ω 5W ,ф36MMSpeaker unit: 40mmSNR：≥90dbFrequency Response:100～18KHZWith 3.5 stereo audio jack, suit to laptop,computer,MP3/MP4 and mobile phone.
Support iPhone, iPad and all telephones which have Bluetooth function
Power bank suit to charging mobile phone and ipad