• Multifunction: Bluetooth player, USB charging, Answer/Hang up, AUX audio input
• Bluetooth Speaker: Bluetooth CSR4.0, compatible with all Bluetooth-enabled devices, it reconnects automatically to the last device used; within 33-foot bluetooth range and about 8 hours play time; no need to hand-connect
• Portable Charger: The speaker can also act as a portable charger due to the built-in with 5200mAh battery, max output current 4.75V-5.25V/1A,support cellphone,tablet and other devices
• Waterproof & Shockproof: IPX4 Waterproof, please don't drop the speaker into water,silicone protection, scratch-resistant and dust proof

Product Details:
USB Output: 5V/1A
Transmission Range: About 10m
Power Interface: USB micro
Play Mode: AUX-in, Bluetooth
Microphone: 1pc
Audio Format: WAV APE FLAC (Also support MP3, WMA)
Play Duration: ≤8h
Battery: 3.7V 5200mA/h (18650*2)
Speaker Specification: 45mm 4O3W
Vibrating Diaphragm Size: 50*90mm
Power Input: 5V/1A
Buttons: ON/OFF, Answer/Hang up, VOL+/PRE, VOL-/NEXT.
Specifications: Functions: Bluetooth player, Answer/Hang up, AUX audio input, USB charging
Waterproof Level: IPX-4 (please don't drop the speaker into water)