KUDOS PowerMusic - all-in-one smartphone battery charger, hands-free speakerphone/conferencing & HiFi stereo speaker. for iPhone 5S, iPhone 5C, iPhone 5, iPhone 4S, Samsung Galaxy S4, S3, Note, iPad, Android Phone, Nokia, HTC. External battery pack 5200mAh high capacity smartphone charger - give iPhone 5S 3.1 full charges, add 31 hour talk time on 3G network. Give Samsung Galaxy S4 1.7 times, add 17 hour talk time on 3G network.. Digital Power Display Hands-free speakerphone: build-in high-gain microphone for voice conferencing HiFi stereo speaker: 32 hour play time, two high fidelity speakers Pocket Size: great for outdoors