Features:● Clear and heavy bass: Enjoy an impressive crystal clear sound quality and robust bass realized through powerful audio driver when hiking， driving， riding， camping， party with your friends or in your room
● Support hands-free， increasing the driving safety
● Built-in bell: Encountered an emergency situation or when riding in crowded street， tap the bell button， the speaker will emit penetrating sound
● With remote photograph button， enjoy selfie anytime anywhere， catch all the beauty of life
● Four defenses: Shockproof， drop proof， dust proof， crash proof
● High-fidelity music playing， enjoy music anywhere anytime
● Specific buckle design: Built-in hook， convenient and fashion
● Built-in 1500mAh durable rechargeable battery， long lasting time for using
● Support AUX / TF Card ( up to 32GB， card not included ) input
● Bluetooth hands-free call answer
● Compatible with most Bluetooth smartphone， pad， PC and other Bluetooth devices
● Saving power: When the Bluetooth is disconnected or paused ( TF card pause / Line in mute )， it will turn off automatically after no playing for ten minutes Model: ER163
Design: Cool
Compatible with: Laptop，Mobile phone，MP3，MP4，MP5，Tablet PC，TF/Micro SD Card
Supports: Bluetooth，Hands-free Calls，Loudspeaker，TF Card Music Playing，Volume Control
Functions: Auto Shutdown，AUX Function，Songs Track，Stereo
Connection: Wireless
Interface: 3.5mm Audio，Micro USB，Power Charge Port，TF Card Slot
Audio Source: Bluetooth Enabled Devices，Electronic Products with 3.5mm Plug，TF/Micro SD Card
Color: Blue，Gray，Green，Orange，Red Bluetooth version: V4.0
TF Card Extension: 32G to the Max.(Not Included)
Transmission Distance: W/O obstacles 10m
Freq: 60Hz-20KHz
S/N: 65dB
Distortion: no more than 1 percent Charging time: 2.5 - 3 hours
Lasting Time: About 4 hours
Battery Capacity: 1500mAh Package weight: 0.621 kg
Product size (L x W x H): 15.60 x 5.70 x 5.70 cm / 6.14 x 2.24 x 2.24 inches
Package size (L x W x H): 20.00 x 10.00 x 9.00 cm / 7.87 x 3.94 x 3.54 inches Package Contents: 1 x Portable Bluetooth 4.0 Crashproof Dustproof Wireless Stereo Speaker with Remote Photograph Button， 1 x Hook， 1 x Audio Cable， 1 x USB Charging Cable， 1 x Bilingual User Manual