The GRANDEY S111 Bluetooth speaker, Support 1+1 Function, Use two pcs S111, it can playing in the same from one Bluetooth device(as your smart phone), and turns into Left and Right channel, offer true 3D stereo sound, provide the real stereo sound, Let you enjoy the true 3D effect. SO, We recommend to buy 2 sets of this product. However, the effect of a separate playing is also very good yet.

parameter

Channel: 2.0
Power: 2*4W
Frequency range: 80Hz-20KHz
BT range: ≤10M
paly time: 15-18 hours
material: Silicon + metal
size: 7"(182mm)*2.67"(70mm )
G.W: 435g
BT version: 4.1CSR
Capacity: 5200mAh 3.7v Input: 5V 1.0A
Out put: 5V1-2.1A
Efficient: 92%@1.0A

• Supports Wireless Music Streaming via New Bluetooth v4.0 Technology, Support 1+1 Function
• Built-in 5200mAh charging Battery, up to 18 hours playback time, and it's a power bank, can charge your mobile phone, IPAD, etc.
• Support twins speakers with Left and Right channel, offer true 3D stereo sound, provide the real stereo sound, Let you enjoy the true 3D effect. ( Kindly Reminder: packaging separately, best to purchase two products to experience true 3D stereo surround sound. )
• The Product is Waterproof,Shockproof and Dustproof, perfect for home, dorm room, kitchen, bathroom, car, parties; streaming music or internet radio services such as Pandora and Spotify
• BUILT-IN MIC for handsfree speakerphone cell phone calls over bluetooth from Smartphones and iPhones

Supports Wireless Music Streaming via New Bluetooth v4.0 Technology, Support 1+1 FunctionGrandey