Laza Htc Thunderbolt Extended Battery Case Designed specifically for the original HTC Thunderbolt extended battery and cover Access to all phone functions, sync/charge & headphone jacks. Open access to speakers, microphone & camera. Precise design to fit your HTC Thunderbolt extended battery and cover perfectly. Impact resistant case protects your phone from falls and scratches. Increased grip and protective case helps to keep your phone looking like new.