Bluetooth Version: V3.0 + EDR
Colour: Black, Red, Blue Operating range: 10m Function: Song Switch, Switch Song, Micro SD/TF Card Music Playing Music Time: 4 Hours S/N: =85d B Speaker Unit: 40mm Interface: 3.5mm Audio, Power Charger, TF Slot Rated Power: 3W Input: DC 5V Battery Capacity: 600m Ah Battery Type: Built-in Rechargeable Battery Frequency Range: 120 Hz-18 K Hz Net Weight: 148 g / 5.22 oz