Gh Quality TG117 BT In/ Outdoor Speaker Waterproof Portable Wireless Column Loudspeaker Box with TF Card FM Radio Specification Specification: 1. Wireless version: 4.2 2. Transmission range: 10M 3. Audio frequency noise ratio: 95dB 4. Battery capacity: 1200mAh 5. Built-in voltage: 3.7V 6. Playback long: 2-4H 7. Horn size: 52mm*2 8. Horn power 4 Omega: 5W*2 9. Charge input: 5V/500ma 10. Color: Black, Green, Red, Blue, blue +red, blue+grey, blue+orange 11. Single machine size MM 12. Single speaker weight: 500g