Product Name: New A9 Mini Portable Bluetooth Wireless Super Bass Stereo Speaker for Mobiles Suppor TF Card Model NO.: SP-03 Compatible Product: Universal Special Function: Memory Card Support Color: Gold,Silver and Black SNR: 81-90dB Sound Channel: 5.1 Interface: Micro USB Usage: Mobile Phone, Portable Player, Computer Speaker Material: metal Amplification Type: Active Type: Bluetooth Wireless Speaker Bluetooth: Rda V4.0 Speaker: 40mm 3? 3W Charge Voltage: 5V Output Power: 3W Frequency Response: 90Hz-20kHz Product Size: 90*31.5mm Battery: 400mAh 3.7V Speaker Weight: 140g Music Play Time: up to 2.5 Hours Trademark: OEM Transport Package: Retail Box Specification: CE Origin: China HS Code: 8525801390 Product Description A9 Mini Portable Bluetooth Wireless Super Bass Stereo Speaker for Mobiles Suppor TF CardFeatures:1.Constructed with aluminum alloy casing, high quality and durable2.Fashion and laconic cylinder shape design, full of modern feel3.Support bluetooth calls handsfree4.Bluetooth Music/TF Card Music/Exterior Music Aux-in Supported5.Stereo and Bass Sound EffectFunction:1.Bluetooth: RDA V4.02.Chipset: RDA58563.Speaker:40mm 3Ω 3W4.Charge Voltage: 5V5.Output power: 3W6.Battery: 400mAh 3.7V7.Product size: 90*31.5mm8.Speaker weight: 140g9.Music play time: up to 2.5 hours10.Frequency Response:90Hz-20KHz 11.S/N Ratio:≥80dB12.Distortion:≤0.5%13.Colors:Gold,silver and blackPackage:1 x Bluetooth Speaker1 x Charger Cable1 x User Manual1 x Retail boxPhotos