HC4 Bella wireless speaker, BT V5.0, with 1500mAh battery, for 3 hours of calls and music, support BT, FM, TF, AUX, USB, TWS playback modes1. Sizes: 200*88*81mm. Weight: 540g.2. BT V5.0, chip: JL.3. Battery capacity: 1500mAh. Charging for about 2 hours.4. Calls / music time: 3 hours.5. Speaker unit: 52mm*2. Power: 5W*2.6. Support BT, FM, TF card, USB flash drive, AUX, TWS and other playback modes.